I finally got around to combining two instances of MiaB into one as mentioned in this post:
However, this process has become a spectacular fail.
I merged the users.sqlite databases from each machine into one new combined file and then copied the email data directories over from the server being de-comissioned.
Semi-success! I was able to access both the old and new user mailboxes without any issues however the admin page no longer functioned properly. On most pages, I was getting the "Error - Something went wrong, sorry!" message, except the add mail users page. That page seemed to work fine as all the data of the mailboxes was showing. That was until I added a new user at which time I got a "Internal Server Error" message. However, despite that error upon refreshing the new mailbox was indeed added.
So, since the install was an older install (v 18 or 19?) I decided to simply attempt an upgrade to see if that solved the issues. Short answer, No. I suffered through all the various python issues and other issues people have been having in the last 3 versions, but FINALLY got it to install the current version. However, I am getting exactly the same results... a MiaB install that seems to work flawlessly as far as the users are concerned, but completely inaccessible Admin wise.
Anything I may have missed? Or any suggestions to get me back up and running completely? TIA.