diff --git a/core/java/android/window/TransitionInfo.java b/core/java/android/window/TransitionInfo.java
index fbdd325..1bc8e6d 100644
--- a/core/java/android/window/TransitionInfo.java
+++ b/core/java/android/window/TransitionInfo.java
@@ -407,6 +407,7 @@
     public static final class Change implements Parcelable {
         private final WindowContainerToken mContainer;
         private WindowContainerToken mParent;
+        private WindowContainerToken mLastParent;
         private final SurfaceControl mLeash;
         private @TransitionMode int mMode = TRANSIT_NONE;
         private @ChangeFlags int mFlags = FLAG_NONE;
@@ -435,6 +436,7 @@
         private Change(Parcel in) {
             mContainer = in.readTypedObject(WindowContainerToken.CREATOR);
             mParent = in.readTypedObject(WindowContainerToken.CREATOR);
+            mLastParent = in.readTypedObject(WindowContainerToken.CREATOR);
             mLeash = new SurfaceControl();
             mLeash.readFromParcel(in);
             mMode = in.readInt();
@@ -458,6 +460,14 @@
             mParent = parent;
         }
 
+        /**
+         * Sets the parent of this change's container before the transition if this change's
+         * container is reparented in the transition.
+         */
+        public void setLastParent(@Nullable WindowContainerToken lastParent) {
+            mLastParent = lastParent;
+        }
+
         /** Sets the transition mode for this change */
         public void setMode(@TransitionMode int mode) {
             mMode = mode;
@@ -541,6 +551,17 @@
             return mParent;
         }
 
+        /**
+         * @return the parent of the changing container before the transition if it is reparented
+         * in the transition. The parent window may not be collected in the transition as a
+         * participant, and it may have been detached from the display. {@code null} if the changing
+         * container has not been reparented in the transition, or if the parent is not organizable.
+         */
+        @Nullable
+        public WindowContainerToken getLastParent() {
+            return mLastParent;
+        }
+
         /** @return which action this change represents. */
         public @TransitionMode int getMode() {
             return mMode;
@@ -640,6 +661,7 @@
         public void writeToParcel(@NonNull Parcel dest, int flags) {
             dest.writeTypedObject(mContainer, flags);
             dest.writeTypedObject(mParent, flags);
+            dest.writeTypedObject(mLastParent, flags);
             mLeash.writeToParcel(dest, flags);
             dest.writeInt(mMode);
             dest.writeInt(mFlags);
@@ -685,6 +707,7 @@
                     + mStartRotation + "->" + mEndRotation + ":" + mRotationAnimation
                     + " endFixedRotation=" + mEndFixedRotation;
             if (mSnapshot != null) out += " snapshot=" + mSnapshot;
+            if (mLastParent != null) out += " lastParent=" + mLastParent;
             return out + "}";
         }
     }
diff --git a/libs/WindowManager/Shell/src/com/android/wm/shell/pip/PipTransition.java b/libs/WindowManager/Shell/src/com/android/wm/shell/pip/PipTransition.java
index 33761d2..2b36b4c 100644
--- a/libs/WindowManager/Shell/src/com/android/wm/shell/pip/PipTransition.java
+++ b/libs/WindowManager/Shell/src/com/android/wm/shell/pip/PipTransition.java
@@ -452,14 +452,17 @@
             @NonNull Transitions.TransitionFinishCallback finishCallback,
             @NonNull TaskInfo taskInfo, @Nullable TransitionInfo.Change pipTaskChange) {
         TransitionInfo.Change pipChange = pipTaskChange;
-        if (pipChange == null) {
+        if (mCurrentPipTaskToken == null) {
+            ProtoLog.w(ShellProtoLogGroup.WM_SHELL_PICTURE_IN_PICTURE,
+                    "%s: There is no existing PiP Task for TRANSIT_EXIT_PIP", TAG);
+        } else if (pipChange == null) {
             // The pipTaskChange is null, this can happen if we are reparenting the PIP activity
             // back to its original Task. In that case, we should animate the activity leash
-            // instead, which should be the only non-task, independent, TRANSIT_CHANGE window.
+            // instead, which should be the change whose last parent is the recorded PiP Task.
             for (int i = info.getChanges().size() - 1; i >= 0; --i) {
                 final TransitionInfo.Change change = info.getChanges().get(i);
-                if (change.getTaskInfo() == null && change.getMode() == TRANSIT_CHANGE
-                        && TransitionInfo.isIndependent(change, info)) {
+                if (mCurrentPipTaskToken.equals(change.getLastParent())) {
+                    // Find the activity that is exiting PiP.
                     pipChange = change;
                     break;
                 }
diff --git a/services/core/java/com/android/server/wm/RootWindowContainer.java b/services/core/java/com/android/server/wm/RootWindowContainer.java
index 38c7595..3c55396 100644
--- a/services/core/java/com/android/server/wm/RootWindowContainer.java
+++ b/services/core/java/com/android/server/wm/RootWindowContainer.java
@@ -2020,7 +2020,12 @@
                 // non-fullscreen bounds. Then when this new PIP task exits PIP, it can restore
                 // to its previous freeform bounds.
                 rootTask.setLastNonFullscreenBounds(task.mLastNonFullscreenBounds);
-                rootTask.setBounds(task.getBounds());
+                // When creating a new Task for PiP, set its initial bounds as the TaskFragment in
+                // case the activity is embedded, so that it can be animated to PiP window from the
+                // current bounds.
+                // Use Task#setBoundsUnchecked to skip checking windowing mode as the windowing mode
+                // will be updated later after this is collected in transition.
+                rootTask.setBoundsUnchecked(r.getTaskFragment().getBounds());
 
                 // Move the last recents animation transaction from original task to the new one.
                 if (task.mLastRecentsAnimationTransaction != null) {
diff --git a/services/core/java/com/android/server/wm/Task.java b/services/core/java/com/android/server/wm/Task.java
index 39ea7a8..155cf28 100644
--- a/services/core/java/com/android/server/wm/Task.java
+++ b/services/core/java/com/android/server/wm/Task.java
@@ -2605,6 +2605,13 @@
         return boundsChange;
     }
 
+    /** Sets the requested bounds regardless of the windowing mode. */
+    int setBoundsUnchecked(@NonNull Rect bounds) {
+        final int boundsChange = super.setBounds(bounds);
+        updateSurfaceBounds();
+        return boundsChange;
+    }
+
     @Override
     public boolean isCompatible(int windowingMode, int activityType) {
         // TODO: Should we just move this to ConfigurationContainer?
@@ -5849,10 +5856,7 @@
             return BOUNDS_CHANGE_NONE;
         }
 
-        final int result = super.setBounds(!inMultiWindowMode() ? null : bounds);
-
-        updateSurfaceBounds();
-        return result;
+        return setBoundsUnchecked(!inMultiWindowMode() ? null : bounds);
     }
 
     @Override
diff --git a/services/core/java/com/android/server/wm/Transition.java b/services/core/java/com/android/server/wm/Transition.java
index cb29e3f..ab38ed23 100644
--- a/services/core/java/com/android/server/wm/Transition.java
+++ b/services/core/java/com/android/server/wm/Transition.java
@@ -1561,6 +1561,10 @@
             if (info.mEndParent != null) {
                 change.setParent(info.mEndParent.mRemoteToken.toWindowContainerToken());
             }
+            if (info.mStartParent != null && info.mStartParent.mRemoteToken != null
+                    && target.getParent() != info.mStartParent) {
+                change.setLastParent(info.mStartParent.mRemoteToken.toWindowContainerToken());
+            }
             change.setMode(info.getTransitMode(target));
             change.setStartAbsBounds(info.mAbsoluteBounds);
             change.setFlags(info.getChangeFlags(target));
diff --git a/services/tests/wmtests/src/com/android/server/wm/RootWindowContainerTests.java b/services/tests/wmtests/src/com/android/server/wm/RootWindowContainerTests.java
index 4f03f54..e0e1d73 100644
--- a/services/tests/wmtests/src/com/android/server/wm/RootWindowContainerTests.java
+++ b/services/tests/wmtests/src/com/android/server/wm/RootWindowContainerTests.java
@@ -72,6 +72,7 @@
 import android.content.pm.ResolveInfo;
 import android.content.res.Configuration;
 import android.content.res.Resources;
+import android.graphics.Rect;
 import android.os.PowerManager;
 import android.os.UserHandle;
 import android.platform.test.annotations.Presubmit;
@@ -391,6 +392,33 @@
         assertEquals(WINDOWING_MODE_FULLSCREEN, fullscreenTask.getWindowingMode());
     }
 
+    @Test
+    public void testMovingEmbeddedActivityToPip() {
+        final Rect taskBounds = new Rect(0, 0, 800, 1000);
+        final Rect taskFragmentBounds = new Rect(0, 0, 400, 1000);
+        final Task task = mRootWindowContainer.getDefaultTaskDisplayArea().createRootTask(
+                WINDOWING_MODE_MULTI_WINDOW, ACTIVITY_TYPE_STANDARD, true /* onTop */);
+        task.setBounds(taskBounds);
+        assertEquals(taskBounds, task.getBounds());
+        final TaskFragment taskFragment = new TaskFragmentBuilder(mAtm)
+                .setParentTask(task)
+                .createActivityCount(2)
+                .setBounds(taskFragmentBounds)
+                .build();
+        assertEquals(taskFragmentBounds, taskFragment.getBounds());
+        final ActivityRecord topActivity = taskFragment.getTopMostActivity();
+
+        // Move the top activity to pinned root task.
+        mRootWindowContainer.moveActivityToPinnedRootTask(topActivity,
+                null /* launchIntoPipHostActivity */, "test");
+
+        final Task pinnedRootTask = task.getDisplayArea().getRootPinnedTask();
+
+        // Ensure the initial bounds of the PiP Task is the same as the TaskFragment.
+        ensureTaskPlacement(pinnedRootTask, topActivity);
+        assertEquals(taskFragmentBounds, pinnedRootTask.getBounds());
+    }
+
     private static void ensureTaskPlacement(Task task, ActivityRecord... activities) {
         final ArrayList<ActivityRecord> taskActivities = new ArrayList<>();
 
diff --git a/services/tests/wmtests/src/com/android/server/wm/TransitionTests.java b/services/tests/wmtests/src/com/android/server/wm/TransitionTests.java
index ec6a74c..29a514c 100644
--- a/services/tests/wmtests/src/com/android/server/wm/TransitionTests.java
+++ b/services/tests/wmtests/src/com/android/server/wm/TransitionTests.java
@@ -1325,6 +1325,35 @@
     }
 
     @Test
+    public void testReparentChangeLastParent() {
+        final Transition transition = createTestTransition(TRANSIT_CHANGE);
+        final ArrayMap<WindowContainer, Transition.ChangeInfo> changes = transition.mChanges;
+        final ArraySet<WindowContainer> participants = transition.mParticipants;
+
+        // Reparent activity in transition.
+        final Task lastParent = createTask(mDisplayContent);
+        final Task newParent = createTask(mDisplayContent);
+        final ActivityRecord activity = createActivityRecord(lastParent);
+        activity.mVisibleRequested = true;
+        // Skip manipulate the SurfaceControl.
+        doNothing().when(activity).setDropInputMode(anyInt());
+        changes.put(activity, new Transition.ChangeInfo(activity));
+        activity.reparent(newParent, POSITION_TOP);
+        activity.mVisibleRequested = false;
+
+        participants.add(activity);
+        final ArrayList<WindowContainer> targets = Transition.calculateTargets(
+                participants, changes);
+        final TransitionInfo info = Transition.calculateTransitionInfo(
+                transition.mType, 0 /* flags */, targets, changes, mMockT);
+
+        // Change contains last parent info.
+        assertEquals(1, info.getChanges().size());
+        assertEquals(lastParent.mRemoteToken.toWindowContainerToken(),
+                info.getChanges().get(0).getLastParent());
+    }
+
+    @Test
     public void testIncludeEmbeddedActivityReparent() {
         final Transition transition = createTestTransition(TRANSIT_OPEN);
         final Task task = createTask(mDisplayContent);