Actually that doesn't seem to work for me - I've used that command before - it collects the samples together, but still creates a .M5p file - i.e. a MachFive program preset.Instructions are on page 72 of the MachFive 3 user guide. Choose "Save Program and Samples" and MF3 will create a .ufs file of the program and a folder with the same name that contains any needed samples. You can open that .ufs file in UVI Workstation or Falcon.
My problem is that I want to convert the hundreds of individual MachFive program presets that I have been creating since MachFive became my main sampler (20 years ago?), replacing Roland S760 hardware machines. At that time I recreated all my presets specially for MachFive. As I said before, I don't use many of them anymore, just occasionally, but it would be nice to be able to load in the programs with multiple samples in them, rather than dragging and dropping individual samples into UVI or Nanosampler...