For example, if I had scouted Colress, could I still encounter him super single/double battles? Dumb question, but I need to make sure I’m not going through the battle tree looking for a trainer I can’t encounter.
If a Trainer who has already been scouted is scouted again, their new party overwrites their previously scouted party.
Source
This statement implies that Trainers can be scouted again, so yes, you could find someone like Colress if you already scouted him once. I also scouted a few of the special trainers in the Battle Tree and was still able to encounter them again in Super Singles.
Hope this helps.
