Break link in graphics imported by reference in FM 12?

[Studio Smalbro]

I am running FrameMaker 12 and I have a lot of trouble with generating 
pdf files. I believe the problem arises from having pages with graphics 
imported by reference - but graphics which are stored on different 
servers. It seems that FrameMaker has trouble with handling the links to 
the servers in the printing process.

I would like to break the links and have the graphics embedded - but is 
there a way to change from "referenced" to "embedded" without having to 
re-import the graphics?

Regards
Bjørn