Reply To: CS4 to CS5 Opening Documents Question

You're correct. What I would suggest doing (or, rather, having the CS5-equipped people do):

Make a copy of the CS4 documents you need to poach info from. Open them, then re-save them in CS5 format, clearly named something snappy like “OldDocumentName_ForCS5PillagingOnlySendThisToPressAndBeFired ;-)” — then take all the elements you'll need out of them and save them cleanly in a Library file. Then you only need to access the library, and this will prevent the potential scenario of someone opening a CS4 document “just to grab a table” and accidentally re-saving that file in CS5 format overtop of the CS4 file.