Messages with Jabber - Chat History Not Saved and Not Imported
I have a user that I just upgraded to a brand new Macbook Air running High Sierra. We did a Time Machine backup and restore to keep the migration very easy. Everything went perfect with the Time Machine migration, the new machine is a 1:1 of the old, with one exception.
We use Messages to connect to an internal Jabber server. It works fine for all of our other users, myself included. Since the upgrade, my user cannot see the past Chat Log of all previous Jabber messages. It also does not save any new chat messages.
She can send me a Jabber message, close Messages, open it back up, and the message she just sent me does not appear in her chat log or history. It always shows up blank with the only option on the Messages interface being "New Message".
So it's a two fold problem. She can't see any of her years worth of previous Jabber messages (she can see these properly on her old laptop). I've tried to recopy ~/Library/Messages/* to the new computer (even though Time Machine already did it for her). That still doesn't show her past Jabber messages.
And as stated above the other side of the problem is that any new Jabber messages aren't saved on the new laptop. In the Messages settings, "Save history when conversations are closed" is checked, and "Keep Messages Forever" is elected.
The only other piece of the puzzle is that her old Macbook Air was running Mavericks and she jumped from 10.9 to High Sierra. However even in Mavericks it was still "Messages" (not iChat) so it's not like she was going from one messaging application to another.
Any ideas?