MG 2.2 Re-mirror image from restored post?


Hello. This is what happened -
  1. User inserted image into their post
  2. Image was mirrored in MG
  3. Moderator deleted the post
  4. Moderator restored the post
  5. I rebuilt the “XFMG: Sync attachment media mirroring” cache
  6. Image is no longer mirrored in MG
Have I missed the correct way to restore the mirrored image? Thanks!