I have a problem in a lot of my drawings, on sheet metal parts I often have the problem that my bend lines become grayed out on their own when reopening the drawing file. I am then forced to delete the unfolded state configuration, and to redo it to get these lines again in the MEP....
I open the model, I click on "Unfolded" of the command manager (to deactivate the unfolded) I click again (to do it again...) and miraculously the colored lines are back ?...
Yes it's already defined for the whole document, when I do it at the moment it works, it's when I close Solidworks and open the plan again that the range lines become grayed out (and by the way the small "folding note" box also on the left in the menu)...
Then I open the room, I press "Unfolded" 2 times and it's OK it comes back normal...