Upgrade-Problems with audiosnap

I'm still using 6.2.1, and have had some problems with Audiosnap not displaying transient markers after I have done some editing and close a project. Sometimes I lose every marker in the track! It seems that Sonar is still storing them becasue I can add them to the pool and use them in various ways (e.g. to quantize other tracks), they just don't display in the clip. When this happens with imported audio, I can just reimport the audio and get the transients back, but any edits I might have made are lost (resetting transients might also do the trick - I haven't tried that).

If I can ever get a repeatable sequence of steps that consistently reproduces the problem, I will submit it to Cakewalk.