Is it possible to assign all posts by one user to another user?
All my posts from the old forum have imported as a new user so I have a clone.
I guess if that’s not possible I could assign admin rights to the imported user and delete my current user in WP, assigning WP posts there.
Currently not I am afraid. One of the many things on the list!
You could do this directly in the database however by reassigning the user_id in the effected posts
I did it the other way around since WP does allow reassigning of posts and that worked for me.