I have recently had a client export some email from his Outlook into an OLM file.
He seems to have checked the option to remove it from his outlook by mistake  , so no problems we go to an earlier time machine backup.
The first time we restore the email and it looks good until it syncs to the server (The 2 accounts are imap) so it says ok I haven't been synced for 5 days l am going to delete this email as it wants to sync with what is left on the server.
Stage 2 was to then go ok , restore from time machine backup and take outlook to offline mode , while in offline mode , create folders on my computer and save the email history for both accounts , the theory being that now the email is not in the imap folders it will stay once the mail sync happens. Unfortunately this does not seem to happen , even though the folders report they have 11000 items , there only seems to be a couple of hundred.
Has anyone come across this issue ?