How can I change forum username when...

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If a user changes their username on the main site, it does not change it in the forum database.

I see in myprofile.php line 347 where the main database is updated. I do not know how to add the SQL code necessary to update the username for the user in the forum database.  Can anyone create this and tell me where to insert it?

Thank you.

The forum integration must be part of the code.
I am not sure if Waldek reads this subforum regularly.
Maybe you want to point him per private forum message to this topic.