hi, status of the tree is saved with the file... what is expanded or not, or the zoom-in level. However, you need to make some changes to your product to trigger a save--so try to hide (and show) one of your parts in the product. THEN zoom in the tree. Then save the product file. Now the tree status should be saved. At least it works in my CATIA...
You're luckier, my Catia doesn't work like yours on this particular matter......
Looking in Option, but I can't find the right solution yet.....
Any suggestion?
Are you loosing also some other settings in the same time? I saw cases where user settings were stored on the network and replaced over night with some standard settings..... then you are loosing yours...