My part created in SW 2009 is a plastic molded part.  It had draft analysis performed on it before I saved it in 2009.

Now that I am using 2010, when I open the part, it is invisible (shaded with lines) unless I perform a new draft analysis to display the surfaces of the part.

Very anoying.   I save the part in 2010 and it still is invisible when I re-open it (unless I re-perform the draft analysis).

Part IS visible if I view it in wireframe or hidden lines, but not with sufaces colored (with or without lines).

Geometry check is OK on part.

IGES and STEP can be output and parts re-imported show up OK (from IGES or STEP).

Part shows up OK in drawing

Part appearance does not seem to matter (erasing appearances and re-setting).

Anyone with a solution to this?