OK I figured this out myself. There may be other ways to do it, but this worked.
I opened the "old" snapshot link with TextEdit, and I could see the second line had IP addresses and directories etc. So I made a NEW snapshot link with the databases on local harddrive, and opened THAT snapshot link (with TextEdit). Comparing the two text files (I think they are xml) I could see that the 2nd line had directory information pertinent to my laptop harddrive.
I copied the "working" 2nd line over the "old" snapshot 2nd line and resaved the .fpsl.
It works - got my record sets!