Convert only phpBB users

[MTO]

I only want to convert my phpBB users, but nothing else.

I want to start a clean new forum but with my current phpBB users.
I dont see an option for this in the importer.

How can I do so? Thanks.

[Compuart]

Just convert everything, then remove each board afterwards.

[MTO]

Yeah, though last time I tried this it crashed the MySQL server.
My phpBB database is about 500MB, it took several hours importing and didnt even finish the import.
That's one of the reasons I was hoping for a way to only import the users. 

[Oldiesmann]

You can always delete everything in phpBB except the users, then do the conversion...