I setup my testboards with an import of V6.5. If I like to import my production data again for doing another importer test which tables must be deleted and which contains data that not belongs to the imported data? I dont like to kill all because there some UBB7 data in it and its a lot of work to begin from scratch.

Having a bit of an issue with my development box at the moment, so I don't have the createtable.php script in front of me, but that's probably going to be your best bet. Take a look at that file, and look for any inserts done. That will tell you which tables have data that needs to be there for a default install.

ok, I will do it on weekend. I work it out and post it here for reference