Alright. Here's a tough one. Our sheet files are not retaining changes to referenced layers (i.e. freeze), as if visretain were set to 0, but it's set to 1!
To put a sheet together, we typically make Model Space Views in view files using the Navigator, and then drag from the Navigator to paper space of the sheet file. Before we upgraded to AutoCAD Architecture 2008 (from ADT 2006), this worked fine--I could freeze layers in viewports, they would stay frozen. Now, any changes to referenced layers in the sheet file revert to the Xref's layer table as if visretain were set to 0 (but it's not).
However, if, in the same sheet file, I detach that Xref, attach the same file manually in model space, make a new viewport in paper space, and then change referenced layers, it retains the changes like it's supposed to!
Also, this is only a problem when the project is loaded in the navigator. For instance, if i open a sheet and then navigate to another project, then mess with layers and reload the Xref, the layers behave as I would expect them to.
It seems clear that there's something going on behind the scenes when I put the model space view on the sheet, I just don't know what that is, and I'm hoping that it isn't some crazy bug that's totally out of my control. Any thoughts would be greatly appreciated.
-Andrew