I'm not sure even how to describe my problem, so here goes....I have a drawing imported from Autocad (R2013 saved down to R2004). I need to add more sheets to the drawing. When I copy a sheet that has all the features I want in the new sheet, The title block comes in correctly, with the correct VP, but the actual "window" to model space  ( in my case, model space has a black background, sheet space is gray), the black area outlined with the white dotted line (I don't know what that is called), is not sized correctly for the sheet. I use two sheet sizes ANSI Mechanical "B" - 11x17, and ANSI Mechanical "C - 22x34. It appears that the model "view" is actually 8 1/2x11, and I can't figure out how to change it. Can you please help?