diff --git a/java/res/values-km-rKH/strings.xml b/java/res/values-km-rKH/strings.xml
index 4d7de93..519aa44 100644
--- a/java/res/values-km-rKH/strings.xml
+++ b/java/res/values-km-rKH/strings.xml
@@ -29,7 +29,7 @@
     <string name="popup_on_keypress" msgid="123894815723512944">"លេច​ឡើង​នៅ​​ពេល​ចុច​គ្រាប់​ចុច"</string>
     <string name="general_category" msgid="1859088467017573195">"ទូទៅ"</string>
     <string name="correction_category" msgid="2236750915056607613">"ការ​កែ​អត្ថបទ"</string>
-    <string name="gesture_typing_category" msgid="497263612130532630">"បញ្ចូល​ដោយ​ប្រើ​កាយវិការ​"</string>
+    <string name="gesture_typing_category" msgid="497263612130532630">"បញ្ចូល​ដោយ​ប្រើ​កាយវិការ"</string>
     <string name="misc_category" msgid="6894192814868233453">"ជម្រើស​ផ្សេងទៀត"</string>
     <string name="advanced_settings" msgid="362895144495591463">"ការ​កំណត់​កម្រិត​ខ្ពស់"</string>
     <string name="advanced_settings_summary" msgid="4487980456152830271">"ជម្រើស​សម្រាប់​អ្នក​ជំនាញ"</string>
@@ -39,7 +39,7 @@
     <string name="show_language_switch_key_summary" msgid="7343403647474265713">"បង្ហាញ​នៅ​ពេល​ដែល​បើក​ភាសា​បញ្ចូល​ច្រើន"</string>
     <string name="sliding_key_input_preview" msgid="6604262359510068370">"បង្ហាញ​ទ្រនិច​បង្ហាញ​ស្លាយ"</string>
     <string name="sliding_key_input_preview_summary" msgid="6340524345729093886">"បង្ហាញ​​សញ្ញា​មើល​​ឃើញ​ខណៈ​ពេល​ដែល​រុញ​ពី​ឆ្វេង ឬ​​គ្រាប់​ចុច​​និមិត្ត​សញ្ញា"</string>
-    <string name="key_preview_popup_dismiss_delay" msgid="6213164897443068248">"​សោ​លេចឡើង​បោះបង់​ការ​​ពន្យារពេល​"</string>
+    <string name="key_preview_popup_dismiss_delay" msgid="6213164897443068248">"​សោ​លេចឡើង​បោះបង់​ការ​​ពន្យារពេល"</string>
     <string name="key_preview_popup_dismiss_no_delay" msgid="2096123151571458064">"គ្មាន​ការ​ពន្យារពេល"</string>
     <string name="key_preview_popup_dismiss_default_delay" msgid="2166964333903906734">"លំនាំដើម"</string>
     <string name="abbreviation_unit_milliseconds" msgid="8700286094028323363">"<xliff:g id="MILLISECONDS">%s</xliff:g> មិល្លី​វិនាទី"</string>
@@ -49,7 +49,7 @@
     <string name="use_personalized_dicts" msgid="5167396352105467626">"ការ​ស្នើ​ផ្ទាល់​ខ្លួន"</string>
     <string name="use_double_space_period" msgid="8781529969425082860">"រយៈ​ពេល​ចុច​ដកឃ្លា​ពីរដង"</string>
     <string name="use_double_space_period_summary" msgid="6532892187247952799">"ប៉ះ​ដកឃ្លា​ពីរ​​ដង​បញ្ចូល​​​រយៈ​ពេល​ដែល​អនុវត្ត​តាម​ដកឃ្លា"</string>
-    <string name="auto_cap" msgid="1719746674854628252">"ការ​សរសេរ​ជា​អក្សរ​ធំ​​ស្វ័យប្រវត្តិ​"</string>
+    <string name="auto_cap" msgid="1719746674854628252">"ការ​សរសេរ​ជា​អក្សរ​ធំ​​ស្វ័យប្រវត្តិ"</string>
     <string name="auto_cap_summary" msgid="7934452761022946874">"សរសេរ​ពាក្យ​ដំបូង​​​ជា​អក្សរ​ធំ​​នៃ​ប្រយោគ​នីមួយ​ៗ"</string>
     <string name="edit_personal_dictionary" msgid="3996910038952940420">"វចនានុក្រម​ផ្ទាល់ខ្លួន"</string>
     <string name="configure_dictionaries_title" msgid="4238652338556902049">"ផ្នែក​បន្ថែម​វចនានុក្រម"</string>
@@ -60,7 +60,7 @@
     <string name="prefs_suggestion_visibility_show_only_portrait_name" msgid="3859783767435239118">"បង្ហាញ​នៅ​ក្នុង​របៀប​បញ្ឈរ"</string>
     <string name="prefs_suggestion_visibility_hide_name" msgid="6309143926422234673">"លាក់​ជានិច្ច"</string>
     <string name="prefs_block_potentially_offensive_title" msgid="5078480071057408934">"ទប់ស្កាត់​​ពាក្យ​​បំពាន"</string>
-    <string name="prefs_block_potentially_offensive_summary" msgid="2371835479734991364">"កុំ​ស្នើ​ឲ្យ​ពាក្យ​បំពាន​មាន​សក្ដានុពល​"</string>
+    <string name="prefs_block_potentially_offensive_summary" msgid="2371835479734991364">"កុំ​ស្នើ​ឲ្យ​ពាក្យ​បំពាន​មាន​សក្ដានុពល"</string>
     <string name="auto_correction" msgid="7630720885194996950">"ការ​កែ​​​ស្វ័យប្រវត្តិ"</string>
     <string name="auto_correction_summary" msgid="5625751551134658006">"ចន្លោះ​មិន​ឃើញ ​និង​សញ្ញា​​វណ្ណយុត្ត​កែ​ពាក្យ​ដែល​បាន​វាយ​ខុស​ស្វ័យប្រវត្តិ"</string>
     <string name="auto_correction_threshold_mode_off" msgid="8470882665417944026">"បិទ"</string>
@@ -123,7 +123,7 @@
     <string name="prefs_keypress_vibration_duration_settings" msgid="7918341459947439226">"ថិរវេលា​​ញ័រ​​ពេល​ចុច​គ្រាប់ចុច"</string>
     <string name="prefs_keypress_sound_volume_settings" msgid="6027007337036891623">"កម្រិត​សំឡេង​ពេល​ចុច​គ្រាប់​ចុច"</string>
     <string name="prefs_read_external_dictionary" msgid="2588931418575013067">"អាន​ឯកសារ​វចនានុក្រម​ខាង​ក្រៅ"</string>
-    <string name="read_external_dictionary_no_files_message" msgid="4947420942224623792">"គ្មាន​ឯកសារ​វចនានុក្រម​នៅ​ក្នុង​ថត​ទាញ​យក​​"</string>
+    <string name="read_external_dictionary_no_files_message" msgid="4947420942224623792">"គ្មាន​ឯកសារ​វចនានុក្រម​នៅ​ក្នុង​ថត​ទាញ​យក"</string>
     <string name="read_external_dictionary_multiple_files_title" msgid="7637749044265808628">"ជ្រើស​ឯកសារ​វចនានុក្រម​ ដើម្បី​ដំឡើង"</string>
     <string name="read_external_dictionary_confirm_install_message" msgid="4782116251651288054">"ពិត​ជា​ដំឡើង​ឯកសារ​នេះ​សម្រាប់ <xliff:g id="LANGUAGE_NAME">%s</xliff:g>?"</string>
     <string name="error" msgid="8940763624668513648">"មាន​កំហុស"</string>
@@ -154,7 +154,7 @@
     <string name="dictionary_provider_name" msgid="3027315045397363079">"កម្មវិធី​ផ្ដល់​វចនានុក្រម"</string>
     <string name="dictionary_service_name" msgid="6237472350693511448">"សេវាកម្ម​​វចនានុក្រម"</string>
     <string name="download_description" msgid="6014835283119198591">"ព័ត៌មាន​បច្ចុប្បន្នភាព​វចនានុក្រម"</string>
-    <string name="dictionary_settings_title" msgid="8091417676045693313">"ផ្នែក​បន្ថែម​វចនានុក្រម​​"</string>
+    <string name="dictionary_settings_title" msgid="8091417676045693313">"ផ្នែក​បន្ថែម​វចនានុក្រម"</string>
     <string name="dictionary_install_over_metered_network_prompt" msgid="3587517870006332980">"វចនានុក្រម​​​​​អាច​ប្រើ​បាន"</string>
     <string name="dictionary_settings_summary" msgid="5305694987799824349">"ការ​កំណត់​សម្រាប់​វចនានុក្រម"</string>
     <string name="user_dictionaries" msgid="3582332055892252845">"វចនានុក្រម​​​អ្នក​ប្រើ"</string>
@@ -170,10 +170,10 @@
     <string name="message_updating" msgid="4457761393932375219">"ពិនិត្យមើល​បច្ចុប្បន្នភាព"</string>
     <string name="message_loading" msgid="5638680861387748936">"កំពុង​ផ្ទុក..."</string>
     <string name="main_dict_description" msgid="3072821352793492143">"វចនានុក្រម​ចម្បង"</string>
-    <string name="cancel" msgid="6830980399865683324">"បោះ​បង់​"</string>
+    <string name="cancel" msgid="6830980399865683324">"បោះ​បង់"</string>
     <string name="go_to_settings" msgid="3876892339342569259">"ការ​កំណត់"</string>
     <string name="install_dict" msgid="180852772562189365">"ដំឡើង"</string>
-    <string name="cancel_download_dict" msgid="7843340278507019303">"បោះ​បង់​"</string>
+    <string name="cancel_download_dict" msgid="7843340278507019303">"បោះ​បង់"</string>
     <string name="delete_dict" msgid="756853268088330054">"លុប"</string>
     <string name="should_download_over_metered_prompt" msgid="1583881200688185508">"ភាសា​ដែល​បាន​ជ្រើស​នៅ​លើ​ឧបករណ៍​ចល័ត​មាន​វចនានុក្រម​អាច​ប្រើ​បាន។&lt;br/&gt; យើង​ផ្ដល់​អនុសាសន៍​ឲ្យ &lt;b&gt;ទាញ​យក&lt;/b&gt; វចនានុក្រម​ភាសា <xliff:g id="LANGUAGE_NAME">%1$s</xliff:g> ដើម្បី​បង្កើន​បទពិសោធន៍​វាយ​បញ្ចូល​របស់​អ្នក។&lt;br/&gt; &lt;br/&gt; ការ​ទាញ​យក​អាច​ចំណាយ​ពេល​ប្រហែល​ពីរ​នាទី​នៅ​តាម 3G។ ការ​គិត​ថ្លៃ​អាច​អនុវត្ត​ប្រសិន​បើ​អ្នក​មិន​ប្រើ &lt;b&gt;ផែនការ​ទិន្នន័យ​គ្មាន​ដែន​កំណត់&lt;/b&gt;.&lt;br/&gt; បើ​អ្នក​មិន​ប្រាកដ​​ថា​ផែនការ​ណា​មួយ​ដែល​អ្នក​មាន យើង​ផ្ដល់​អនុសាសន៍​ឲ្យ​​ភ្ជាប់​វ៉ាយហ្វាយ ដើម្បី​ចាប់ផ្ដើម​ទាញ​យក​ដោយ​ស្វ័យ​ប្រវត្តិ។&lt;br/&gt; &lt;br/&gt; ជំនួយ៖ អ្នក​អាច​ទាញ​យក និង​លុប​វចនានុក្រម​ដោយ​ចូល​ទៅ​ &lt;b&gt;ភាសា &amp; ការ​បញ្ចូល&lt;/b&gt; នៅ​ក្នុង​ម៉ឺនុយ &lt;b&gt;ការ​កំណត់&lt;/b&gt; សម្រាប់​ឧបករណ៍​ចល័ត។"</string>
     <string name="download_over_metered" msgid="1643065851159409546">"ទាញ​យក​ឥឡូវ​នេះ (<xliff:g id="SIZE_IN_MEGABYTES">%1$.1f</xliff:g> មេកាបៃ)"</string>
@@ -191,7 +191,7 @@
     <string name="user_dict_settings_add_word_option_name" msgid="6665558053408962865">"ពាក្យ៖"</string>
     <string name="user_dict_settings_add_shortcut_option_name" msgid="3094731590655523777">"ផ្លូវកាត់​៖"</string>
     <string name="user_dict_settings_add_locale_option_name" msgid="4738643440987277705">"ភាសា៖"</string>
-    <string name="user_dict_settings_add_word_hint" msgid="4902434148985906707">"វាយ​បញ្ចូល​ពាក្យ​"</string>
+    <string name="user_dict_settings_add_word_hint" msgid="4902434148985906707">"វាយ​បញ្ចូល​ពាក្យ"</string>
     <string name="user_dict_settings_add_shortcut_hint" msgid="2265453012555060178">"ផ្លូវកាត់​ជា​ជម្រើស"</string>
     <string name="user_dict_settings_edit_dialog_title" msgid="3765774633869590352">"កែ​ពាក្យ"</string>
     <string name="user_dict_settings_context_menu_edit_title" msgid="6812255903472456302">"កែ"</string>
diff --git a/java/src/com/android/inputmethod/keyboard/internal/KeyboardTextsTable.java b/java/src/com/android/inputmethod/keyboard/internal/KeyboardTextsTable.java
index 0f9645e..7e6181a 100644
--- a/java/src/com/android/inputmethod/keyboard/internal/KeyboardTextsTable.java
+++ b/java/src/com/android/inputmethod/keyboard/internal/KeyboardTextsTable.java
@@ -1067,33 +1067,33 @@
         // U+00E5: "å" LATIN SMALL LETTER A WITH RING ABOVE
         // U+0101: "ā" LATIN SMALL LETTER A WITH MACRON
         /* morekeys_a */ "\u00E0,\u00E1,\u00E2,\u00E4,\u00E6,\u00E3,\u00E5,\u0101",
+        // U+00F3: "ó" LATIN SMALL LETTER O WITH ACUTE
         // U+00F4: "ô" LATIN SMALL LETTER O WITH CIRCUMFLEX
         // U+00F6: "ö" LATIN SMALL LETTER O WITH DIAERESIS
         // U+00F2: "ò" LATIN SMALL LETTER O WITH GRAVE
-        // U+00F3: "ó" LATIN SMALL LETTER O WITH ACUTE
         // U+0153: "œ" LATIN SMALL LIGATURE OE
         // U+00F8: "ø" LATIN SMALL LETTER O WITH STROKE
         // U+014D: "ō" LATIN SMALL LETTER O WITH MACRON
         // U+00F5: "õ" LATIN SMALL LETTER O WITH TILDE
-        /* morekeys_o */ "\u00F4,\u00F6,\u00F2,\u00F3,\u0153,\u00F8,\u014D,\u00F5",
+        /* morekeys_o */ "\u00F3,\u00F4,\u00F6,\u00F2,\u0153,\u00F8,\u014D,\u00F5",
+        // U+00FA: "ú" LATIN SMALL LETTER U WITH ACUTE
         // U+00FB: "û" LATIN SMALL LETTER U WITH CIRCUMFLEX
         // U+00FC: "ü" LATIN SMALL LETTER U WITH DIAERESIS
         // U+00F9: "ù" LATIN SMALL LETTER U WITH GRAVE
-        // U+00FA: "ú" LATIN SMALL LETTER U WITH ACUTE
         // U+016B: "ū" LATIN SMALL LETTER U WITH MACRON
-        /* morekeys_u */ "\u00FB,\u00FC,\u00F9,\u00FA,\u016B",
-        // U+00E8: "è" LATIN SMALL LETTER E WITH GRAVE
+        /* morekeys_u */ "\u00FA,\u00FB,\u00FC,\u00F9,\u016B",
         // U+00E9: "é" LATIN SMALL LETTER E WITH ACUTE
+        // U+00E8: "è" LATIN SMALL LETTER E WITH GRAVE
         // U+00EA: "ê" LATIN SMALL LETTER E WITH CIRCUMFLEX
         // U+00EB: "ë" LATIN SMALL LETTER E WITH DIAERESIS
         // U+0113: "ē" LATIN SMALL LETTER E WITH MACRON
-        /* morekeys_e */ "\u00E8,\u00E9,\u00EA,\u00EB,\u0113",
+        /* morekeys_e */ "\u00E9,\u00E8,\u00EA,\u00EB,\u0113",
+        // U+00ED: "í" LATIN SMALL LETTER I WITH ACUTE
         // U+00EE: "î" LATIN SMALL LETTER I WITH CIRCUMFLEX
         // U+00EF: "ï" LATIN SMALL LETTER I WITH DIAERESIS
-        // U+00ED: "í" LATIN SMALL LETTER I WITH ACUTE
         // U+012B: "ī" LATIN SMALL LETTER I WITH MACRON
         // U+00EC: "ì" LATIN SMALL LETTER I WITH GRAVE
-        /* morekeys_i */ "\u00EE,\u00EF,\u00ED,\u012B,\u00EC",
+        /* morekeys_i */ "\u00ED,\u00EE,\u00EF,\u012B,\u00EC",
         // U+00E7: "ç" LATIN SMALL LETTER C WITH CEDILLA
         /* morekeys_c */ "\u00E7",
         /* double_quotes */ null,
@@ -3588,33 +3588,33 @@
         // U+00E5: "å" LATIN SMALL LETTER A WITH RING ABOVE
         // U+0101: "ā" LATIN SMALL LETTER A WITH MACRON
         /* morekeys_a */ "\u00E0,\u00E1,\u00E2,\u00E4,\u00E6,\u00E3,\u00E5,\u0101",
+        // U+00F3: "ó" LATIN SMALL LETTER O WITH ACUTE
         // U+00F4: "ô" LATIN SMALL LETTER O WITH CIRCUMFLEX
         // U+00F6: "ö" LATIN SMALL LETTER O WITH DIAERESIS
         // U+00F2: "ò" LATIN SMALL LETTER O WITH GRAVE
-        // U+00F3: "ó" LATIN SMALL LETTER O WITH ACUTE
         // U+0153: "œ" LATIN SMALL LIGATURE OE
         // U+00F8: "ø" LATIN SMALL LETTER O WITH STROKE
         // U+014D: "ō" LATIN SMALL LETTER O WITH MACRON
         // U+00F5: "õ" LATIN SMALL LETTER O WITH TILDE
-        /* morekeys_o */ "\u00F4,\u00F6,\u00F2,\u00F3,\u0153,\u00F8,\u014D,\u00F5",
+        /* morekeys_o */ "\u00F3,\u00F4,\u00F6,\u00F2,\u0153,\u00F8,\u014D,\u00F5",
+        // U+00FA: "ú" LATIN SMALL LETTER U WITH ACUTE
         // U+00FB: "û" LATIN SMALL LETTER U WITH CIRCUMFLEX
         // U+00FC: "ü" LATIN SMALL LETTER U WITH DIAERESIS
         // U+00F9: "ù" LATIN SMALL LETTER U WITH GRAVE
-        // U+00FA: "ú" LATIN SMALL LETTER U WITH ACUTE
         // U+016B: "ū" LATIN SMALL LETTER U WITH MACRON
-        /* morekeys_u */ "\u00FB,\u00FC,\u00F9,\u00FA,\u016B",
-        // U+00E8: "è" LATIN SMALL LETTER E WITH GRAVE
+        /* morekeys_u */ "\u00FA,\u00FB,\u00FC,\u00F9,\u016B",
         // U+00E9: "é" LATIN SMALL LETTER E WITH ACUTE
+        // U+00E8: "è" LATIN SMALL LETTER E WITH GRAVE
         // U+00EA: "ê" LATIN SMALL LETTER E WITH CIRCUMFLEX
         // U+00EB: "ë" LATIN SMALL LETTER E WITH DIAERESIS
         // U+0113: "ē" LATIN SMALL LETTER E WITH MACRON
-        /* morekeys_e */ "\u00E8,\u00E9,\u00EA,\u00EB,\u0113",
+        /* morekeys_e */ "\u00E9,\u00E8,\u00EA,\u00EB,\u0113",
+        // U+00ED: "í" LATIN SMALL LETTER I WITH ACUTE
         // U+00EE: "î" LATIN SMALL LETTER I WITH CIRCUMFLEX
         // U+00EF: "ï" LATIN SMALL LETTER I WITH DIAERESIS
-        // U+00ED: "í" LATIN SMALL LETTER I WITH ACUTE
         // U+012B: "ī" LATIN SMALL LETTER I WITH MACRON
         // U+00EC: "ì" LATIN SMALL LETTER I WITH GRAVE
-        /* morekeys_i */ "\u00EE,\u00EF,\u00ED,\u012B,\u00EC",
+        /* morekeys_i */ "\u00ED,\u00EE,\u00EF,\u012B,\u00EC",
         // U+00E7: "ç" LATIN SMALL LETTER C WITH CEDILLA
         /* morekeys_c */ "\u00E7",
         /* double_quotes */ null,
diff --git a/java/src/com/android/inputmethod/latin/BinaryDictionary.java b/java/src/com/android/inputmethod/latin/BinaryDictionary.java
index b88509f..83ee982 100644
--- a/java/src/com/android/inputmethod/latin/BinaryDictionary.java
+++ b/java/src/com/android/inputmethod/latin/BinaryDictionary.java
@@ -218,6 +218,8 @@
             int bigramProbability);
     private static native String getPropertyNative(long dict, String query);
     private static native boolean isCorruptedNative(long dict);
+    private static native boolean migrateNative(long dict, String dictFilePath,
+            long newFormatVersion);
 
     // TODO: Move native dict into session
     private final void loadDictionary(final String path, final long startOffset,
@@ -533,7 +535,9 @@
             return false;
         }
         final String tmpDictFilePath = mDictFilePath + DICT_FILE_NAME_SUFFIX_FOR_MIGRATION;
-        // TODO: Implement migrateNative(tmpDictFilePath, newFormatVersion).
+        if (!migrateNative(mNativeDict, tmpDictFilePath, newFormatVersion)) {
+            return false;
+        }
         close();
         final File dictFile = new File(mDictFilePath);
         final File tmpDictFile = new File(tmpDictFilePath);
diff --git a/java/src/com/android/inputmethod/latin/ExpandableBinaryDictionary.java b/java/src/com/android/inputmethod/latin/ExpandableBinaryDictionary.java
index c825ca4..e3bed31 100644
--- a/java/src/com/android/inputmethod/latin/ExpandableBinaryDictionary.java
+++ b/java/src/com/android/inputmethod/latin/ExpandableBinaryDictionary.java
@@ -470,7 +470,10 @@
         }
         if (mBinaryDictionary.isValidDictionary()
                 && needsToMigrateDictionary(mBinaryDictionary.getFormatVersion())) {
-            mBinaryDictionary.migrateTo(DICTIONARY_FORMAT_VERSION);
+            if (!mBinaryDictionary.migrateTo(DICTIONARY_FORMAT_VERSION)) {
+                Log.e(TAG, "Dictionary migration failed: " + mDictName);
+                removeBinaryDictionaryLocked();
+            }
         }
     }
 
diff --git a/native/jni/com_android_inputmethod_latin_BinaryDictionary.cpp b/native/jni/com_android_inputmethod_latin_BinaryDictionary.cpp
index 9016cae..3ac424f 100644
--- a/native/jni/com_android_inputmethod_latin_BinaryDictionary.cpp
+++ b/native/jni/com_android_inputmethod_latin_BinaryDictionary.cpp
@@ -32,6 +32,7 @@
 #include "suggest/policyimpl/dictionary/structure/dictionary_structure_with_buffer_policy_factory.h"
 #include "utils/char_utils.h"
 #include "utils/jni_data_utils.h"
+#include "utils/log_utils.h"
 #include "utils/time_keeper.h"
 
 namespace latinime {
@@ -489,6 +490,87 @@
     return dictionary->getDictionaryStructurePolicy()->isCorrupted();
 }
 
+static DictionaryStructureWithBufferPolicy::StructurePolicyPtr runGCAndGetNewStructurePolicy(
+        DictionaryStructureWithBufferPolicy::StructurePolicyPtr structurePolicy,
+        const char *const dictFilePath) {
+    structurePolicy->flushWithGC(dictFilePath);
+    structurePolicy.release();
+    return DictionaryStructureWithBufferPolicyFactory::newPolicyForExistingDictFile(
+            dictFilePath, 0 /* offset */, 0 /* size */, true /* isUpdatable */);
+}
+
+static bool latinime_BinaryDictionary_migrateNative(JNIEnv *env, jclass clazz, jlong dict,
+        jstring dictFilePath, jlong newFormatVersion) {
+    Dictionary *dictionary = reinterpret_cast<Dictionary *>(dict);
+    if (!dictionary) {
+        return false;
+    }
+    const jsize filePathUtf8Length = env->GetStringUTFLength(dictFilePath);
+    char dictFilePathChars[filePathUtf8Length + 1];
+    env->GetStringUTFRegion(dictFilePath, 0, env->GetStringLength(dictFilePath), dictFilePathChars);
+    dictFilePathChars[filePathUtf8Length] = '\0';
+
+    const DictionaryHeaderStructurePolicy *const headerPolicy =
+            dictionary->getDictionaryStructurePolicy()->getHeaderStructurePolicy();
+    DictionaryStructureWithBufferPolicy::StructurePolicyPtr dictionaryStructureWithBufferPolicy =
+            DictionaryStructureWithBufferPolicyFactory::newPolicyForOnMemoryDict(
+                    newFormatVersion, *headerPolicy->getLocale(), headerPolicy->getAttributeMap());
+    if (!dictionaryStructureWithBufferPolicy) {
+        LogUtils::logToJava(env, "Cannot migrate header.");
+        return false;
+    }
+
+    // TODO: Migrate historical information.
+    int wordCodePoints[MAX_WORD_LENGTH];
+    int token = 0;
+    // Add unigrams.
+    do {
+        token = dictionary->getNextWordAndNextToken(token, wordCodePoints);
+        const int wordLength = CharUtils::getCodePointCount(MAX_WORD_LENGTH, wordCodePoints);
+        const WordProperty wordProperty = dictionary->getWordProperty(wordCodePoints, wordLength);
+        if (dictionaryStructureWithBufferPolicy->needsToRunGC(true /* mindsBlockByGC */)) {
+            dictionaryStructureWithBufferPolicy = runGCAndGetNewStructurePolicy(
+                    std::move(dictionaryStructureWithBufferPolicy), dictFilePathChars);
+            if (!dictionaryStructureWithBufferPolicy) {
+                LogUtils::logToJava(env, "Cannot open dict after GC.");
+                return false;
+            }
+        }
+        if (!dictionaryStructureWithBufferPolicy->addUnigramWord(wordCodePoints, wordLength,
+                wordProperty.getUnigramProperty())) {
+            LogUtils::logToJava(env, "Cannot add unigram to the new dict.");
+            return false;
+        }
+    } while (token != 0);
+
+    // Add bigrams.
+    do {
+        token = dictionary->getNextWordAndNextToken(token, wordCodePoints);
+        const int wordLength = CharUtils::getCodePointCount(MAX_WORD_LENGTH, wordCodePoints);
+        const WordProperty wordProperty = dictionary->getWordProperty(wordCodePoints, wordLength);
+        if (dictionaryStructureWithBufferPolicy->needsToRunGC(true /* mindsBlockByGC */)) {
+            dictionaryStructureWithBufferPolicy = runGCAndGetNewStructurePolicy(
+                    std::move(dictionaryStructureWithBufferPolicy), dictFilePathChars);
+            if (!dictionaryStructureWithBufferPolicy) {
+                LogUtils::logToJava(env, "Cannot open dict after GC.");
+                return false;
+            }
+        }
+        for (const BigramProperty &bigarmProperty : *wordProperty.getBigramProperties()) {
+            const std::vector<int> *targetCodePoints = bigarmProperty.getTargetCodePoints();
+            if (!dictionaryStructureWithBufferPolicy->addBigramWords(wordCodePoints, wordLength,
+                    targetCodePoints->data(), targetCodePoints->size(),
+                    bigarmProperty.getProbability(), bigarmProperty.getTimestamp())) {
+                LogUtils::logToJava(env, "Cannot add bigram to the new dict.");
+                return false;
+            }
+        }
+    } while (token != 0);
+    // Save to File.
+    dictionaryStructureWithBufferPolicy->flushWithGC(dictFilePathChars);
+    return true;
+}
+
 static const JNINativeMethod sMethods[] = {
     {
         const_cast<char *>("openNative"),
@@ -591,6 +673,11 @@
         const_cast<char *>("isCorruptedNative"),
         const_cast<char *>("(J)Z"),
         reinterpret_cast<void *>(latinime_BinaryDictionary_isCorruptedNative)
+    },
+    {
+        const_cast<char *>("migrateNative"),
+        const_cast<char *>("(JLjava/lang/String;J)Z"),
+        reinterpret_cast<void *>(latinime_BinaryDictionary_migrateNative)
     }
 };
 
diff --git a/native/jni/src/suggest/core/dictionary/property/word_property.h b/native/jni/src/suggest/core/dictionary/property/word_property.h
index 5519a91..aa3e0b6 100644
--- a/native/jni/src/suggest/core/dictionary/property/word_property.h
+++ b/native/jni/src/suggest/core/dictionary/property/word_property.h
@@ -42,6 +42,14 @@
             jintArray outProbabilityInfo, jobject outBigramTargets, jobject outBigramProbabilities,
             jobject outShortcutTargets, jobject outShortcutProbabilities) const;
 
+    const UnigramProperty *getUnigramProperty() const {
+        return &mUnigramProperty;
+    }
+
+    const std::vector<BigramProperty> *getBigramProperties() const {
+        return &mBigrams;
+    }
+
  private:
     // Default copy constructor is used for using as a return value.
     DISALLOW_ASSIGNMENT_OPERATOR(WordProperty);
diff --git a/native/jni/src/suggest/core/policy/dictionary_header_structure_policy.h b/native/jni/src/suggest/core/policy/dictionary_header_structure_policy.h
index a8dab9f..845e629 100644
--- a/native/jni/src/suggest/core/policy/dictionary_header_structure_policy.h
+++ b/native/jni/src/suggest/core/policy/dictionary_header_structure_policy.h
@@ -49,6 +49,8 @@
 
     virtual bool shouldBoostExactMatches() const = 0;
 
+    virtual const std::vector<int> *getLocale() const = 0;
+
  protected:
     DictionaryHeaderStructurePolicy() {}
 
diff --git a/native/jni/src/suggest/policyimpl/dictionary/header/header_policy.h b/native/jni/src/suggest/policyimpl/dictionary/header/header_policy.h
index 251a719..e4a6dc5 100644
--- a/native/jni/src/suggest/policyimpl/dictionary/header/header_policy.h
+++ b/native/jni/src/suggest/policyimpl/dictionary/header/header_policy.h
@@ -238,6 +238,10 @@
             const int unigramCount, const int bigramCount, const int extendedRegionSize,
             DictionaryHeaderStructurePolicy::AttributeMap *outAttributeMap) const;
 
+    AK_FORCE_INLINE const std::vector<int> *getLocale() const {
+        return &mLocale;
+    }
+
  private:
     DISALLOW_COPY_AND_ASSIGN(HeaderPolicy);
 
diff --git a/tests/src/com/android/inputmethod/keyboard/layout/tests/EnglishCustomizer.java b/tests/src/com/android/inputmethod/keyboard/layout/tests/EnglishCustomizer.java
index 29264ff..3e82f65 100644
--- a/tests/src/com/android/inputmethod/keyboard/layout/tests/EnglishCustomizer.java
+++ b/tests/src/com/android/inputmethod/keyboard/layout/tests/EnglishCustomizer.java
@@ -27,34 +27,34 @@
     @Override
     public ExpectedKeyboardBuilder setAccentedLetters(final ExpectedKeyboardBuilder builder) {
         return builder
-                // U+00E8: "è" LATIN SMALL LETTER E WITH GRAVE
                 // U+00E9: "é" LATIN SMALL LETTER E WITH ACUTE
+                // U+00E8: "è" LATIN SMALL LETTER E WITH GRAVE
                 // U+00EA: "ê" LATIN SMALL LETTER E WITH CIRCUMFLEX
                 // U+00EB: "ë" LATIN SMALL LETTER E WITH DIAERESIS
                 // U+0113: "ē" LATIN SMALL LETTER E WITH MACRON
-                .setMoreKeysOf("e", "\u00E8", "\u00E9", "\u00EA", "\u00EB", "\u0113")
+                .setMoreKeysOf("e", "\u00E9", "\u00E8", "\u00EA", "\u00EB", "\u0113")
+                // U+00FA: "ú" LATIN SMALL LETTER U WITH ACUTE
                 // U+00FB: "û" LATIN SMALL LETTER U WITH CIRCUMFLEX
                 // U+00FC: "ü" LATIN SMALL LETTER U WITH DIAERESIS
                 // U+00F9: "ù" LATIN SMALL LETTER U WITH GRAVE
-                // U+00FA: "ú" LATIN SMALL LETTER U WITH ACUTE
                 // U+016B: "ū" LATIN SMALL LETTER U WITH MACRON
-                .setMoreKeysOf("u", "\u00FB", "\u00FC", "\u00F9", "\u00FA", "\u016B")
+                .setMoreKeysOf("u", "\u00FA", "\u00FB", "\u00FC", "\u00F9", "\u016B")
+                // U+00ED: "í" LATIN SMALL LETTER I WITH ACUTE
                 // U+00EE: "î" LATIN SMALL LETTER I WITH CIRCUMFLEX
                 // U+00EF: "ï" LATIN SMALL LETTER I WITH DIAERESIS
-                // U+00ED: "í" LATIN SMALL LETTER I WITH ACUTE
                 // U+012B: "ī" LATIN SMALL LETTER I WITH MACRON
                 // U+00EC: "ì" LATIN SMALL LETTER I WITH GRAVE
-                .setMoreKeysOf("i", "\u00EE", "\u00EF", "\u00ED", "\u012B", "\u00EC")
+                .setMoreKeysOf("i", "\u00ED", "\u00EE", "\u00EF", "\u012B", "\u00EC")
+                // U+00F3: "ó" LATIN SMALL LETTER O WITH ACUTE
                 // U+00F4: "ô" LATIN SMALL LETTER O WITH CIRCUMFLEX
                 // U+00F6: "ö" LATIN SMALL LETTER O WITH DIAERESIS
                 // U+00F2: "ò" LATIN SMALL LETTER O WITH GRAVE
-                // U+00F3: "ó" LATIN SMALL LETTER O WITH ACUTE
                 // U+0153: "œ" LATIN SMALL LIGATURE OE
                 // U+00F8: "ø" LATIN SMALL LETTER O WITH STROKE
                 // U+014D: "ō" LATIN SMALL LETTER O WITH MACRON
                 // U+00F5: "õ" LATIN SMALL LETTER O WITH TILDE
                 .setMoreKeysOf("o",
-                        "\u00F4", "\u00F6", "\u00F2", "\u00F3", "\u0153", "\u00F8", "\u014D",
+                        "\u00F3", "\u00F4", "\u00F6", "\u00F2", "\u0153", "\u00F8", "\u014D",
                         "\u00F5")
                 // U+00E1: "á" LATIN SMALL LETTER A WITH ACUTE
                 // U+00E2: "â" LATIN SMALL LETTER A WITH CIRCUMFLEX
diff --git a/tools/make-keyboard-text/res/values-en/donottranslate-more-keys.xml b/tools/make-keyboard-text/res/values-en/donottranslate-more-keys.xml
index 7998bf1..c22edba 100644
--- a/tools/make-keyboard-text/res/values-en/donottranslate-more-keys.xml
+++ b/tools/make-keyboard-text/res/values-en/donottranslate-more-keys.xml
@@ -27,33 +27,33 @@
          U+00E5: "å" LATIN SMALL LETTER A WITH RING ABOVE
          U+0101: "ā" LATIN SMALL LETTER A WITH MACRON -->
     <string name="morekeys_a">&#x00E0;,&#x00E1;,&#x00E2;,&#x00E4;,&#x00E6;,&#x00E3;,&#x00E5;,&#x0101;</string>
-    <!-- U+00E8: "è" LATIN SMALL LETTER E WITH GRAVE
-         U+00E9: "é" LATIN SMALL LETTER E WITH ACUTE
+    <!-- U+00E9: "é" LATIN SMALL LETTER E WITH ACUTE
+         U+00E8: "è" LATIN SMALL LETTER E WITH GRAVE
          U+00EA: "ê" LATIN SMALL LETTER E WITH CIRCUMFLEX
          U+00EB: "ë" LATIN SMALL LETTER E WITH DIAERESIS
          U+0113: "ē" LATIN SMALL LETTER E WITH MACRON -->
-    <string name="morekeys_e">&#x00E8;,&#x00E9;,&#x00EA;,&#x00EB;,&#x0113;</string>
-    <!-- U+00EE: "î" LATIN SMALL LETTER I WITH CIRCUMFLEX
+    <string name="morekeys_e">&#x00E9;,&#x00E8;,&#x00EA;,&#x00EB;,&#x0113;</string>
+    <!-- U+00ED: "í" LATIN SMALL LETTER I WITH ACUTE
+         U+00EE: "î" LATIN SMALL LETTER I WITH CIRCUMFLEX
          U+00EF: "ï" LATIN SMALL LETTER I WITH DIAERESIS
-         U+00ED: "í" LATIN SMALL LETTER I WITH ACUTE
          U+012B: "ī" LATIN SMALL LETTER I WITH MACRON
          U+00EC: "ì" LATIN SMALL LETTER I WITH GRAVE -->
-    <string name="morekeys_i">&#x00EE;,&#x00EF;,&#x00ED;,&#x012B;,&#x00EC;</string>
-    <!-- U+00F4: "ô" LATIN SMALL LETTER O WITH CIRCUMFLEX
+    <string name="morekeys_i">&#x00ED;,&#x00EE;,&#x00EF;,&#x012B;,&#x00EC;</string>
+    <!-- U+00F3: "ó" LATIN SMALL LETTER O WITH ACUTE
+         U+00F4: "ô" LATIN SMALL LETTER O WITH CIRCUMFLEX
          U+00F6: "ö" LATIN SMALL LETTER O WITH DIAERESIS
          U+00F2: "ò" LATIN SMALL LETTER O WITH GRAVE
-         U+00F3: "ó" LATIN SMALL LETTER O WITH ACUTE
          U+0153: "œ" LATIN SMALL LIGATURE OE
          U+00F8: "ø" LATIN SMALL LETTER O WITH STROKE
          U+014D: "ō" LATIN SMALL LETTER O WITH MACRON
          U+00F5: "õ" LATIN SMALL LETTER O WITH TILDE -->
-    <string name="morekeys_o">&#x00F4;,&#x00F6;,&#x00F2;,&#x00F3;,&#x0153;,&#x00F8;,&#x014D;,&#x00F5;</string>
-    <!-- U+00FB: "û" LATIN SMALL LETTER U WITH CIRCUMFLEX
+    <string name="morekeys_o">&#x00F3;,&#x00F4;,&#x00F6;,&#x00F2;,&#x0153;,&#x00F8;,&#x014D;,&#x00F5;</string>
+    <!-- U+00FA: "ú" LATIN SMALL LETTER U WITH ACUTE
+         U+00FB: "û" LATIN SMALL LETTER U WITH CIRCUMFLEX
          U+00FC: "ü" LATIN SMALL LETTER U WITH DIAERESIS
          U+00F9: "ù" LATIN SMALL LETTER U WITH GRAVE
-         U+00FA: "ú" LATIN SMALL LETTER U WITH ACUTE
          U+016B: "ū" LATIN SMALL LETTER U WITH MACRON -->
-    <string name="morekeys_u">&#x00FB;,&#x00FC;,&#x00F9;,&#x00FA;,&#x016B;</string>
+    <string name="morekeys_u">&#x00FA;,&#x00FB;,&#x00FC;,&#x00F9;,&#x016B;</string>
     <!-- U+00DF: "ß" LATIN SMALL LETTER SHARP S -->
     <string name="morekeys_s">&#x00DF;</string>
     <!-- U+00F1: "ñ" LATIN SMALL LETTER N WITH TILDE -->
diff --git a/tools/make-keyboard-text/res/values-zu/donottranslate-more-keys.xml b/tools/make-keyboard-text/res/values-zu/donottranslate-more-keys.xml
index f9150f3..2c5df0c 100644
--- a/tools/make-keyboard-text/res/values-zu/donottranslate-more-keys.xml
+++ b/tools/make-keyboard-text/res/values-zu/donottranslate-more-keys.xml
@@ -28,33 +28,33 @@
          U+00E5: "å" LATIN SMALL LETTER A WITH RING ABOVE
          U+0101: "ā" LATIN SMALL LETTER A WITH MACRON -->
     <string name="morekeys_a">&#x00E0;,&#x00E1;,&#x00E2;,&#x00E4;,&#x00E6;,&#x00E3;,&#x00E5;,&#x0101;</string>
-    <!-- U+00E8: "è" LATIN SMALL LETTER E WITH GRAVE
-         U+00E9: "é" LATIN SMALL LETTER E WITH ACUTE
+    <!-- U+00E9: "é" LATIN SMALL LETTER E WITH ACUTE
+         U+00E8: "è" LATIN SMALL LETTER E WITH GRAVE
          U+00EA: "ê" LATIN SMALL LETTER E WITH CIRCUMFLEX
          U+00EB: "ë" LATIN SMALL LETTER E WITH DIAERESIS
          U+0113: "ē" LATIN SMALL LETTER E WITH MACRON -->
-    <string name="morekeys_e">&#x00E8;,&#x00E9;,&#x00EA;,&#x00EB;,&#x0113;</string>
-    <!-- U+00EE: "î" LATIN SMALL LETTER I WITH CIRCUMFLEX
+    <string name="morekeys_e">&#x00E9;,&#x00E8;,&#x00EA;,&#x00EB;,&#x0113;</string>
+    <!-- U+00ED: "í" LATIN SMALL LETTER I WITH ACUTE
+         U+00EE: "î" LATIN SMALL LETTER I WITH CIRCUMFLEX
          U+00EF: "ï" LATIN SMALL LETTER I WITH DIAERESIS
-         U+00ED: "í" LATIN SMALL LETTER I WITH ACUTE
          U+012B: "ī" LATIN SMALL LETTER I WITH MACRON
          U+00EC: "ì" LATIN SMALL LETTER I WITH GRAVE -->
-    <string name="morekeys_i">&#x00EE;,&#x00EF;,&#x00ED;,&#x012B;,&#x00EC;</string>
-    <!-- U+00F4: "ô" LATIN SMALL LETTER O WITH CIRCUMFLEX
+    <string name="morekeys_i">&#x00ED;,&#x00EE;,&#x00EF;,&#x012B;,&#x00EC;</string>
+    <!-- U+00F3: "ó" LATIN SMALL LETTER O WITH ACUTE
+         U+00F4: "ô" LATIN SMALL LETTER O WITH CIRCUMFLEX
          U+00F6: "ö" LATIN SMALL LETTER O WITH DIAERESIS
          U+00F2: "ò" LATIN SMALL LETTER O WITH GRAVE
-         U+00F3: "ó" LATIN SMALL LETTER O WITH ACUTE
          U+0153: "œ" LATIN SMALL LIGATURE OE
          U+00F8: "ø" LATIN SMALL LETTER O WITH STROKE
          U+014D: "ō" LATIN SMALL LETTER O WITH MACRON
          U+00F5: "õ" LATIN SMALL LETTER O WITH TILDE -->
-    <string name="morekeys_o">&#x00F4;,&#x00F6;,&#x00F2;,&#x00F3;,&#x0153;,&#x00F8;,&#x014D;,&#x00F5;</string>
-    <!-- U+00FB: "û" LATIN SMALL LETTER U WITH CIRCUMFLEX
+    <string name="morekeys_o">&#x00F3;,&#x00F4;,&#x00F6;,&#x00F2;,&#x0153;,&#x00F8;,&#x014D;,&#x00F5;</string>
+    <!-- U+00FA: "ú" LATIN SMALL LETTER U WITH ACUTE
+         U+00FB: "û" LATIN SMALL LETTER U WITH CIRCUMFLEX
          U+00FC: "ü" LATIN SMALL LETTER U WITH DIAERESIS
          U+00F9: "ù" LATIN SMALL LETTER U WITH GRAVE
-         U+00FA: "ú" LATIN SMALL LETTER U WITH ACUTE
          U+016B: "ū" LATIN SMALL LETTER U WITH MACRON -->
-    <string name="morekeys_u">&#x00FB;,&#x00FC;,&#x00F9;,&#x00FA;,&#x016B;</string>
+    <string name="morekeys_u">&#x00FA;,&#x00FB;,&#x00FC;,&#x00F9;,&#x016B;</string>
     <!-- U+00DF: "ß" LATIN SMALL LETTER SHARP S -->
     <string name="morekeys_s">&#x00DF;</string>
     <!-- U+00F1: "ñ" LATIN SMALL LETTER N WITH TILDE -->