ray-
you can't save the 24/96 full set files as a full set. what you should do is just line up the files in wavelab using the insert audio file function, but don't save it. then insert track markers while the wavs are open in the active window and run the auto split. that way you'll get the 24/96 tracks saved individually. you are essentially working on the 24/96 files without saving them as one long set. after you save the 24/96 individual tracks, you can process down to 44.1 and then dither to 16bit and save directly as a new file. this will save the entire thing as one long 16/44 track. unfortunately, you cannot save the 24/96 material as one long set if it is over an hour. does this help?