I am having this problem as well. I have created several sheets each with a viewport for my title block and one for my drawing. I don't know what I am doing, as I don't think I'm making "extensive" edits...just working like normal. At some point I go into my sheets and my viewports have all turned to 1:1 scale, all layers are turned off and I have no idea where all of my annotations are.
A couple of times I just bit the bullet and remade them, but it keeps happening and is driving me crazy! More than anything it's all of my annotations. Creating a new viewport is easy, but ALL of my notes and dimensions are gone.
I've always been a Vectorworks advocate, but this is making me have second thoughts.
Mac OS 10.4.2 VW 11.5
