Hey all-
I'm on a production with a couple AP's that can only access Avid Media CENTRAL (don't get me started on what a bad name this is, considering it has the same Initials on Avid Media Composer 
but I digress....) 
Before I started on the production they were making SEQUENCES out of a bunch of interview footage that had been shot. They did this for two weeks before I started.
I have nudged them into the (better) idea of making subclips rather than sequences. But for a few of the shows now I have to go through their talking head quotes and subclip things myself.
The problem is this. Inside AM COMPOSER, I have a sequence containing various clips from multiple cameras of interviews.
I loaded them into the SOURCE browser and created detailed SUBCLIPS out of them yesterday.
However today they are showing up differently. Some do not have video attached to them, and rather than having the SUBCLIP icon, they now are showing up as sequences, even though the IN and OUT point is the same as yesterday.
So first question, I guess, is
Can I make subclips out of another Sequence in Media Composer? Or do I have to use the original material?
and... if the answer to the above is "NO". Can I copy clips from one sequence to another, or bring their source from the sequence timeline to the SOURCE window so I can make subclips.
If you read the above and took the time to thoughtfully reply, THANK YOU VERY MUCH!! 
Chapman