F1 not selectable in ports with user mapping

Hey guys I have a quick question.

I'm having issues with my f1 not comming up on the ports dropdown list. I can select it with a user map or the default, but with my imported mapping it doesn't show up. I have everything correct as it's the same mapping I've had for years. I know this has happened to me before.

What is the fix for this. Again I have everything setup correctly.

Thanks.

Edit* Using traktor 2.7 now. Mapping is from version 2.5
Anything labeled as 'Generic Midi' doesn't have my F1 on the ports dropdown menus.
When I re-import the mapping it always just says "n/a" or "None" on the in and out ports.

You have to set which kind of mapping layer you use, either native (user) or midi in the F1 options. Then it will set up itself when you press shift + browse.