not sure how this is related to bbpress ?
Because here is a reference to it from 5 years ago:
phpBB import username issue
and I can confirm that it is happening because of bbpress, though I don’t understand why.
can’t say I do either.
Presume this is a single import?
If so how many users ?
No, actually I am seeing this issue on freshly created users.
To give you a little more info, it’s a membership site which leverages MemberPress and bbPress is connected to BuddyPress.
so this is a user registering for the site?
Yes, a user signs up through memberpress, which creates a username record in wp_user. Then, for whatever reason, instead of the nicename or whatever in the wp_bp_xprofile_data table, those users are labeled as imported_nicename, and that’s what is visible on bbpress. If a user goes to change their username, it apparently fixes the issue. But I’m operating on a dozen or more signups a day, and over 7k users.
hmm – so if you temnporarily deactivate bbpress and then register as a new user – you get ‘imported_…’
No, bbPress adds imported_ to the username in the wp_bp_xprofile_data table. Which appears en lieu of the username on all forums. However, the imported_ namespace is not in the wp_users table. It’s only an issue in bbPress.
wp_bp_xprofile_data is a buddypress table, bbpress only uses wp_users and meta.
Might be worth logging in the buddypress support forum to see if they can help