Question: What does "Save FrameImage with Imported Graphics" do?
Answer: Back in the early days when FrameMaker was a true cross-platform tool
that would allow you to work the same Frame file on Windows, Mac and various
flavors of Unix, FrameImage was an equilizer giving you a common format across
the three platforms for imported raster images.
While you could probably still use it with mif, etc. I doubt that many need it
today. FrameImage is mostly an artifact. Turning it on will bloat your file
sizes and give you little or no benefit.