I case that anyone still should have trouble with this, I found a solution that worked for me.
My setup was moving a blog from one to another using the export/import function. But after importing on the new site i got the message “You are not allowed to edit this post” when I tried to do a new post.
The solution was to, instead of creating the user from the old database in the wizard, I created them before I started the import and all had admin rights.
I hope this can help ??
