John,
You shouldn’t have to convert the file — if it came out of the DV file it’s already a 48k file — just set the properties in audition to 48k, edit the file, and then save it as usual. I admit I was current using Sound Forge when I noticed this behavior, but there shouldn’t be any difference with audition. Now, the reason I’m using sound forge is that I can’t the latest version of audition to work in the 64 bit environment at all, so there may be a problem there.
Fredrick W Keyser