Use ABM PTS, thats what its there for. The only time you might not want to use it is in a ADS-WPR (contract) environment. That is, after you log on to a specific ATC unit, the aircraft system sends automatic position reports to the ATC facility at each waypoint (this replaces manual position reports). So ATC will receive a position report at each ABM PT which they dont want. But for this you would have to specifically log on to the CPDLC facility, as in the NAT region for example. Other than this, use it. If at all you have minor differences in track, ATC wont know. You are using a state of the art aircraft for cryin-out- loud. They're not gonna violate you when you're on a 200nm direct course.. I would suggest that you do not "clean up" the direct route. Leave it like it is and ignore ABM PTS that you dont need. It's when you start messing around with cleaning up abeam points that you're looking for trouble. Leave it like it is.