We just discovered that NetComm is auto-matching event GUESTS, not paid registrants, to constituent records within the RE plug-in. First we had to summon support to explain how to get these transactions out of the plug-in without matching the guests to constituent records; there is just too much room for error. (In this particular case a paid registrant had listed HIMSELF as his own guest, which created a real mess. And this happens ALL the time.) We realize this "enhancement" in 7.2 probably solved some issues for other sites, but for us it creates more work. If we could turn off this feature it would be helpful.
This is also a major issue for us, creating much more work as we have to manually unlink people and we also end up with constituents coming through as guests of themselves as you can only link people once which is not enough if you have multiple options within one event, eg dinner and accommodation and a lecture.