I have a block of midi notes missing in my track view. I've cut and pasted all the parts and see most of the notes but theirs a small block or two that don't show any notes everything plays fine and I see them in the drum pane and event list just not in the track view its grayed/Blacked out. Sonar X3 build211. I know I need to upgrade been paying my monthly $ since it came out, just haven't got around to it! Wondering when I bounce them into audio tracks if I will be missing audio? 

The last release, X3e, is build 352. You should patch, though it may not have anything to do with your current issue. Can you post a screenshot with lanes expanded? Kind of sounds like a clip is muted and the PRV is set to not display muted clips, but if you can hear the notes, I'm not sure what you've got going on.

Select the entire track and do a Bounce to Clip