i use office 2011 for mac and have 5 main identities backed up taking up almost 200Gig – and I no longer use Outlook – can I remove 4 or all of these identities?

I use Office 2011 for Mac.

I bought a new macbook and attempted to transfer documents over but it turned out that my document file in my first computer was larger than the entire capacity of my new macbook air. brought them into apple genius bar and they transferred everything over except for microsoft identities which were in total about 200 Gig.

I no longer use outlook because of the many problems I've had with it - although i still use word, excel, Ppt, pub , etc.

Can I remove all or at least the last Main Identity backup on my first macbook without it impairing my used of the other sub programs of Office 2011 other than outlook?