Unify Project and Convert External Links in Local Links

Hi...i have the following question.

I created a 7 individuals projects and afeter i created 1 project where the 7 originals was inserted, and this one project call the others and the external links into project was created....but i need to unify in one project and convert the external links in local links (well all the project will be in one and the links have be updated)...but at the manually way this work will take me aa lot of time and I need to know a fast way to do this...can someone help me give me o explain me the way of do this?

Thanks to everyone.