Hello Günther,
Thanks for your reply. I understand IPS exceptions in the way that you have some kind of exclusion (differences) regarding the standard profile settings for specific traffic/signatures. Not in the way, that this automatically means you want to exclude such traffic completely from the IPS point of view.
That being said, I think it makes sense to detect something in this case as we are performing a restructure of the network (for some parts) and therefore need the detect just for specific sources, destinations & signatures. As these aren't that many hosts a new profile does not make much sense (which could have been another option).