Categories changed to Forums after import

Hey all, i have imported from IPB 3.3 and all my categories are showing up as forums.


Category 1
-- Forum 1
-- Forum 2

now shows as

Forum 1
Forum 2

And the total posts/threads count for the top one (which was a category) is now showing as all of the subforums combined.

How can i turn it back to just a category?