Yes, but I meant in general. If you were to make 4 channel tunes (XM). He mentioned FastTracker II first!
Also, the MOD loader in FT2 is pretty good, but it might save the MODs (4 channel mode) with the tag "4CHN" or "FLT4", instead of "M.K."... Making it unplayable with ProTracker. Not 100% sure about this, though.
And about the "tweak MOD" thing I wrote earlier: You're right, something was wrong there. What I meant was: If the tracker can handle >4 ch MODs (Open ModPlug Tracker can do this), then you can open a XM, convert to MOD, *then* merge the channels to 4 and stuff