Hi,
Newbie here. First post.  I did look for this answer, and read the tech ref, but i'm stumped.  I'm running X2a and I open a new project, insert Superior Drummer, create a step sequencer pattern, play it back, etc, everything is fine.  Then I x-out of step sequencer and can see my clip with data in it in my track.  If I load the piano view on that clip, I can see my notes.  But if I double click on it, when step sequencer comes up, the matrix is blank.  My notes are not there.  It's like it loaded a new SS clip/window. I'm sure it's just a setting, but I can't find it and it makes no sense to me as a default behavior.  8.5PE didn't work like this.  Please help.
Thanks.

What happens if you drag the clip into the SS?

If I drag the clip into the SS window, the notes show up for that instance only.  If I close the SS window and double click on the same clip again, the notes do not appear.

not seeing that behavior in x2.  did you reinstall x2 at any point?

In another thread you mention using a drum map.  I have read about problems using drum maps and the step sequencer in X2 (apparently confirmed by CW). You are better off not using a drum map if you intend to use the step sequencer.

I made a post on an X3a thread because it was the exact same issue, but to remove any confusion, i'm only using X2a, and have never installed X3.  These are all new clips I've created in X2. I originally created the map/clip in X2, and then updated to X2a hoping it would fix the issue.  Maybe I should start a completely new project now that X2a is running?
 

Do not use a drum map if you plan on using the step sequencer in X2 or X2a. http://forum.cakewalk.com/FindPost/2901903

Hmmn.  Not using drum maps with X2.  I've been using 8.5PE for years and its SS with drum maps.  It's great.  I upgraded to X2, but if I can't load a drum map with it, that's a bummer. Sounds like X3 doesn't fix this.  Rose is displeased...  What to do....

just double click the ss clip twice.
and yes, drum maps work fine...

@Swamptooth - I had all sorts of issues with drum maps and Step Sequencer, and was explicitly told by Cakewalk tech support folks that they do not intend for folks to use Step Sequencer with drum maps.
 
For me, I converted those clips to midi clips and then I could properly edit.
 
Bob Bone