"Hidden" components in drawing views

Like many others, I am constantly dealing with graphicsissues since upgrading to SW2009. I have learned to deal with itand am, for the most part, able to work around these problems.There is one issue that I am having with a few of my assemblydrawings that I have not been able to easily work around. When Iopen an some existing drawings, certain components andsubassemblies do not show up in the drawing views. In the designtree it shows the parts in question as being hidden, but when Iopen the assembly itself, all of the parts are visible. I have gonethrough all of my system options and settings as well those of theparts and I have not been able to find out why this is happening.This includes ensuring that "hide components on view creation" isnot checked. I have tried opening the files on other machines hereand have the same issue, so I am led to believe that the drawingfile is somehow corrupt, possibly due to the conversion to SW2009.
The only way I have been able to correct this issue is by replacingthe affected drawing view (basically redrawing everything),stretching what should be a 10 minute task into a few hours ofwork. After these views are redrawn, there is no longer a problemwith these components. Because the problem is not recurring and islimited to only a handful of drawings (that I know of), I do notfind this to be an urgent matter. I am simply reaching out to seeif anyone else has had a similar problem or has any ideas to makemy life alittle easier.
Although I am posting this with zero hope of a solution, any inputon this matter is greatly appreciated.

ColinSolidworksDrawings And Detailing