UBB.threads PHP Forum Software Community Forums UBB.threads Importer Support importing from ubbclassic to ubbthreats 7

I have a error saying:

Sorry, but this import version works only for UBB.threads™ 7.0
This appears to be version 7.0.

Could someone explain more clearly how to import the old forum into the new version?

I have 2 directories:
ubb (the old classic)
ubbtreads (the new version)

What must I do to import the old version?

John