On further investigation, I have found that this plugin imports users AND imports topics, but doesn’t make the connection. So basically it imports users twice – once from user table and another time as authors of something (or nothing).
The usernames shown as post authors have imported_ prefixed to them.
So we have
username, and
imported_username
So I tried deleting imported_username using bbpress function of assigning all its topics/replies to username. The operation was successful and now I see username as author of those topics/replies, but one problem lingers: I still don’t see any topics/replies by username if I go to its profile page.
I can’t go the opposite way and delete username and then change imported_username to username as WordPress doesn’t allow changing usernames.
P.S. I imported from phpBB 3.0.9
