When I use a set list for a gig, but I tweak something in preparation for the gig in the Stadium Editor, it causes the Stadium to always use the USER Set List (or Master Set List or ALL Presets setlist - whatever it is supposed to be called). I then have to go into the Stadium itself and select the Set List that I was using because the Stadium editor changed the preset that I tweaked and therefore switched to the USER Set list. This is a very annoying behavior since the USER Set List is the Master Set List which can get very big over time (unless you employ a separate maintenance strategy requiring you to keep the USEER Set List (Master Set List or whatever) organized (which is quite the chore in itself).
I think that Line 6's approach of using pointers for every Preset was a pretty BAD IDEA. It is something that I have used in Windows (various versions over the decades) very sparingly and for specific purposes. I think that it causes more headaches than it solves and this may just be another example of that.
Am I misunderstanding how presets work on the Stadium and perhaps there is a better way. Let me know what works best for you or if you find it just as frustrating.