Revit :: Disappearing Nested Labels / Annotation?

we have this issue that has affected us in Revit 2011 and 2012.  For many of our families we have a 3D object, a 2d representation of symbolic lines, and then some editable text/annotation:
 
- The text is a Generic Annotation annotation family, with a single label, set to display the parameter "Text Frame"
 
- This family is then inserted into the family of the specific object being created, with, under label's Type Properties, the "Text Frame" of the label being linked with a "Text" parameter in the object family.
 
This seems to work all fine and dandy, however, we're getting an interesting problem:  after working in the file for a while some percentage of the annotation on these families disappear in a view.  Sometimes it's just a few, sometimes half, sometimes all of them just go away (everything else, including the symbolic lines, are still there).  If you close the file and re-open, they will re-appear.  If you nudge them, they will re-appear.  Other views may still have them, at least for a time... then they too will dissapear. 
 
This happens both on screen and, dangerously, during printing.  You print a whole set, only to discover much of your annotation for objects is gone... (not to mention the cost and waste of trees when you re-print).
 
Is this a known problem (search only turned up one thread on this), or is there another way to do what I want (have editable annotation on a family) that avoids this issue and I stubmled onto the improper way of doing it?