diff --git a/src/com/android/launcher3/InvariantDeviceProfile.java b/src/com/android/launcher3/InvariantDeviceProfile.java
index 5becdde..dddc43f 100644
--- a/src/com/android/launcher3/InvariantDeviceProfile.java
+++ b/src/com/android/launcher3/InvariantDeviceProfile.java
@@ -16,6 +16,7 @@
 
 package com.android.launcher3;
 
+import static com.android.launcher3.LauncherPrefs.DB_FILE;
 import static com.android.launcher3.LauncherPrefs.FIXED_LANDSCAPE_MODE;
 import static com.android.launcher3.LauncherPrefs.GRID_NAME;
 import static com.android.launcher3.Utilities.dpiFromPx;
@@ -53,6 +54,7 @@
 
 import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.icons.DotRenderer;
+import com.android.launcher3.logging.FileLog;
 import com.android.launcher3.model.DeviceGridState;
 import com.android.launcher3.provider.RestoreDbTask;
 import com.android.launcher3.testing.shared.ResourceUtils;
@@ -86,6 +88,8 @@
     public static final MainThreadInitializedObject<InvariantDeviceProfile> INSTANCE =
             new MainThreadInitializedObject<>(InvariantDeviceProfile::new);
 
+    public static final String GRID_NAME_PREFS_KEY = "idp_grid_name";
+
     @Retention(RetentionPolicy.SOURCE)
     @IntDef({TYPE_PHONE, TYPE_MULTI_DISPLAY, TYPE_TABLET})
     public @interface DeviceType {
@@ -241,8 +245,11 @@
     @TargetApi(23)
     private InvariantDeviceProfile(Context context) {
         String gridName = getCurrentGridName(context);
+        FileLog.d(TAG, "New InvariantDeviceProfile, before initGrid(): "
+                + "gridName:" + gridName
+                + ", LauncherPrefs GRID_NAME:" + LauncherPrefs.get(context).get(GRID_NAME)
+                + ", LauncherPrefs DB_FILE:" + LauncherPrefs.get(context).get(DB_FILE));
         initGrid(context, gridName);
-
         DisplayController.INSTANCE.get(context).setPriorityListener(
                 (displayContext, info, flags) -> {
                     if ((flags & (CHANGE_DENSITY | CHANGE_SUPPORTED_BOUNDS
@@ -371,6 +378,10 @@
         }
 
         initGrid(context, displayInfo, displayOption);
+        FileLog.d(TAG, "initGrid: "
+                + "gridName:" + gridName
+                + ", LauncherPrefs GRID_NAME:" + LauncherPrefs.get(context).get(GRID_NAME)
+                + ", LauncherPrefs DB_FILE:" + LauncherPrefs.get(context).get(DB_FILE));
         return displayOption.grid.name;
     }
 
diff --git a/src/com/android/launcher3/LauncherAppState.java b/src/com/android/launcher3/LauncherAppState.java
index 01d0a74..a53238d 100644
--- a/src/com/android/launcher3/LauncherAppState.java
+++ b/src/com/android/launcher3/LauncherAppState.java
@@ -20,8 +20,12 @@
 import static android.content.Context.RECEIVER_EXPORTED;
 
 import static com.android.launcher3.Flags.enableSmartspaceRemovalToggle;
+import static com.android.launcher3.InvariantDeviceProfile.GRID_NAME_PREFS_KEY;
+import static com.android.launcher3.LauncherPrefs.DB_FILE;
+import static com.android.launcher3.LauncherPrefs.GRID_NAME;
 import static com.android.launcher3.LauncherPrefs.ICON_STATE;
 import static com.android.launcher3.LauncherPrefs.THEMED_ICONS;
+import static com.android.launcher3.model.DeviceGridState.KEY_DB_FILE;
 import static com.android.launcher3.model.LoaderTask.SMARTSPACE_ON_HOME_SCREEN;
 import static com.android.launcher3.util.Executors.MODEL_EXECUTOR;
 import static com.android.launcher3.util.Executors.UI_HELPER_EXECUTOR;
@@ -47,6 +51,7 @@
 import com.android.launcher3.icons.IconProvider;
 import com.android.launcher3.icons.LauncherIconProvider;
 import com.android.launcher3.icons.LauncherIcons;
+import com.android.launcher3.logging.FileLog;
 import com.android.launcher3.model.ModelLauncherCallbacks;
 import com.android.launcher3.model.WidgetsFilterDataProvider;
 import com.android.launcher3.notification.NotificationListener;
@@ -70,6 +75,7 @@
 
 public class LauncherAppState implements SafeCloseable {
 
+    public static final String TAG = "LauncherAppState";
     public static final String ACTION_FORCE_ROLOAD = "force-reload-launcher";
 
     // We do not need any synchronization for this variable as its only written on UI thread.
@@ -293,6 +299,12 @@
             if (Themes.KEY_THEMED_ICONS.equals(key)) {
                 mIconProvider.setIconThemeSupported(Themes.isThemedIconEnabled(mContext));
                 verifyIconChanged();
+            } else if (GRID_NAME_PREFS_KEY.equals(key)) {
+                FileLog.d(TAG, "onPrefChanged GRID_NAME changed: "
+                        + LauncherPrefs.get(mContext).get(GRID_NAME));
+            } else if (KEY_DB_FILE.equals(key)) {
+                FileLog.d(TAG, "onPrefChanged DB_FILE changed: "
+                        + LauncherPrefs.get(mContext).get(DB_FILE));
             }
         }
     }
diff --git a/src/com/android/launcher3/LauncherPrefs.kt b/src/com/android/launcher3/LauncherPrefs.kt
index 712c56c..5b9c2fa 100644
--- a/src/com/android/launcher3/LauncherPrefs.kt
+++ b/src/com/android/launcher3/LauncherPrefs.kt
@@ -20,6 +20,7 @@
 import android.content.SharedPreferences
 import androidx.annotation.VisibleForTesting
 import com.android.launcher3.BuildConfig.WIDGET_ON_FIRST_SCREEN
+import com.android.launcher3.InvariantDeviceProfile.GRID_NAME_PREFS_KEY
 import com.android.launcher3.LauncherFiles.DEVICE_PREFERENCES_KEY
 import com.android.launcher3.LauncherFiles.SHARED_PREFERENCES_KEY
 import com.android.launcher3.model.DeviceGridState
@@ -138,7 +139,7 @@
         @JvmField
         val GRID_NAME =
             ConstantItem(
-                "idp_grid_name",
+                GRID_NAME_PREFS_KEY,
                 isBackedUp = true,
                 defaultValue = null,
                 encryptionType = EncryptionType.ENCRYPTED,
diff --git a/src/com/android/launcher3/provider/RestoreDbTask.java b/src/com/android/launcher3/provider/RestoreDbTask.java
index 8db981f..f56888b 100644
--- a/src/com/android/launcher3/provider/RestoreDbTask.java
+++ b/src/com/android/launcher3/provider/RestoreDbTask.java
@@ -124,11 +124,13 @@
         LauncherPrefs.get(context).removeSync(RESTORE_DEVICE);
 
         DeviceGridState deviceGridState = new DeviceGridState(context);
+        FileLog.d(TAG, "restoreIfNeeded: deviceGridState from context: " + deviceGridState);
         String oldPhoneFileName = deviceGridState.getDbFile();
         List<String> previousDbs = existingDbs(context);
         removeOldDBs(context, oldPhoneFileName);
         // The idp before this contains data about the old phone, after this it becomes the idp
         // of the current phone.
+        FileLog.d(TAG, "Resetting IDP to default for restore dest device");
         idp.reset(context);
         trySettingPreviousGridAsCurrent(context, idp, oldPhoneFileName, previousDbs);
     }
@@ -144,17 +146,24 @@
                 context, oldPhoneDbFileName);
         // The grid option could be null if current phone doesn't support the previous db.
         if (oldPhoneGridOption != null) {
+            FileLog.d(TAG, "trySettingPreviousGridAsCurrent:"
+                    + ", oldPhoneDbFileName: " + oldPhoneDbFileName
+                    + ", oldPhoneGridOption: " + oldPhoneGridOption
+                    + ", previousDbs: " + previousDbs);
 
             /* If the user only used the default db on the previous phone and the new default db is
              * bigger than or equal to the previous one, then keep the new default db */
             if (previousDbs.size() == 1 && oldPhoneGridOption.numColumns <= idp.numColumns
                     && oldPhoneGridOption.numRows <= idp.numRows) {
                 /* Keep the user in default grid */
+                FileLog.d(TAG, "Keeping default db from restore as current grid");
                 return;
             }
             /*
              * Here we are setting the previous db as the current one.
              */
+            FileLog.d(TAG, "Setting grid from old device as current grid: "
+                + "oldPhoneGridOption:" + oldPhoneGridOption.name);
             idp.setCurrentGrid(context, oldPhoneGridOption.name);
         }
     }