I am quite stumped.... I have created a drawing with a few tabs of paperspace with viewports layed out the way I am needing.  Every time I go out of the drawing and go back into it at a later time some, if not all, will revert back to an 8x11 paperspace and not stay the 11x17. 

Also, some of the viewports will be outside of the printable paper area.

I have noticed that the Paperspace symbol is in different places with the tabs.

We use D.S. to create P&ID and PLC diagrams and print only to 11x17.