Using 7.2 Threads
6.7.3 Classic

Script create members and churns on porting posts
but when I go in no forums exist.

Script is a real booger to debug because it keeps plowing ahead on errors.

Does it generate forums from post data after it ports posts?

The categories and forums should be done right after the users are imported. It could be that the forums were imported but not assigned to a category, especially if your classic site only has a single category.

What you can try, is this. Run the following SQL command;

update ubbt_FORUMS set CATEGORY_ID='1'

then Clear the Cache, and see if the forums show up.

Thank you that was it.