This question already has an answer here:
The apps were all user-downloaded. Transfer size should have created generous internal storage "breathing room."
Details: Samsung Galaxy S5 Android 5.0 Via Android App Manager(AAM) reported completion of each move 64GB Samsung SD Card (presumably undamaged) Internal storage 90-95% capacity. Phone was restarted after all the moves. Cleared each cache before moving.
Referred to the following, but it is dated and from a different platform.
Editorial: Why, if so little storage is gained with a move, are SD cards so recommended as near-crucial in Android? After 6 months, my "Let the buyer beware" factor is growing with each swipe at each of Android's supposed benefits. Seems I need a PhD to embark on just about any change.