Taxonomy Replaces Previous

It seems as though I can only have one Taxonomy in the Custom Press Content Types area.

I created one called authors and the other called courses and the first time after finishing with authors, and then doing courses that authors disappeared... I looked around refreshed and things thinking it was still there but I couldn't find it... so I made another authors one thinking maybe I did something wrong and then that over wrote the other.

It seems as though I can only have one