Thanks Noel for the response. What puzzles me still is how Reaper, Samplitude Pro X and Studio One 2 didn't get bit by the same bug?
Hopefully, now we can move forward toward a workable compromise solution till all projects are finished with EZdrummer 1 and everyone works with SONAR X4.
EDIT: For the record and the forum member's information, I am one of two SONAR users that are betatesters and frequently visit this forum. I wish I had caught it but all of my active projects were in Pro Tools 11, Samplitude Pro X and Studio One 2 this development cycle. None of those platforms exhibited the behavior. My time has been relatively full of active projects for clients and no game stopping bugs appeared while working on those tunes in other platforms.
All of my old EZdrummer/SONAR projects have been long finished and archived over a year ago. I did create some test projects in SONAR but because they were created from a clean slate, no problems appeared. It didn't occur to me that SONAR would be any different regarding legacy projects.
I don't actively use SONAR anymore but I've been a Cakewalk user for so long and I have such an affinity for this forum that I will try to still represent the SONAR user base and liaison between Toontrack and Cakewalk users to the best of my abilities as time permits.