Thanks for the reply Nanaky.
I have done as you suggested but it does not seem to work. (Ill try a few over things but this is what I get)
I am currently Authorized on the kobo. With one of my IDS.
But when I go to read a book that was originally from my other adobe id i get the following still
This document is protected by Adobe Digital Rights Management and is not currently authorised for use with your Adobe ID.
Please sign-in with the authorised ID.
Has you try to used the join again? Seems the first not right work. o.O