Guys, rel 2001. I have a drawing which uses multiple models, an assembly and some parts. No matter which model I select to be current, the model tree always displays the model of the last view entered on the drawing, which happens to be a part. Is this intended functionality? How can I get it to show the assembly model tree? Also, the sheet number box has become greyed-out so I cannot select which sheet I want to be in, I have to go into Menu/Sheets/Set current. Any ideas why? Dave