Just tried and not able to get that to occur. Any chance the Track for the Event List is to "Multi" and the extra events are on a different track?
I don't think so, but I'll check. I store mostly patch changes and continuous controller info, rarely notes. In order to get the data sent to the right device, each set of events is labeled for a specific channel. (I'm controlling multiple devices so having it set to multi would not work for me)
I create my tracks on one computer then move them to another one for performance. I wonder if saving the file on different computers could trigger such a phenomenon...?
As I said, it's random... and I haven't been able to pin down a common denominator between the times it happens and the times it doesn't. So I'm not surprised the problem isn't easily reproduced.
It's not a big deal. It has been happening here for years, and I know now to look for it when I edit a CC parameter and the results aren't what I specified. I mention it mostly for quality control, since it *IS* happening (just often enough to keep this old man confused)