Summary
Images that were migrated to another volume were not deleted from the source volume.
Workaround
Check whether the source volume is on read-only or write-protected media.
Note: If you decide to move the volume, make sure to update the volume's fixed and/or removable path(s). After updating the volume's paths, you should make sure that images, text, and electronic documents belonging to the volume can still be viewed. Finally, you may need to remove read-only status from the volume files.