I'm having a problem with sketches not appearing on drawings in Inventor 2012. This is for a product line made using iparts and iassemblies, and affects approximately 150 drawings.
These sketches were made in Inventor R11, and are attached to part features in the drawing view. When opening these drawings in 2012, the dimensions that were attached to the sketch are still visible, (albeit in the wrong places and on the wrong features), but the sketch itself is not. The sketch still exists as an item under the view, but the actual contents of the sketch (lines and hatching) are gone.
The assembly consists of three identical cylindrical parts with mitred ends welded together in two operations to form a T-shaped part. I have a view representation for each operation. The drawing has each view on one page.
The first step requires welding the two parts together to form an "L" shape, and then cutting off a portion of the corner of the "L" to facilitiate joining the third part in the second operation. In my assembly, I mated the two cylindrical parts together, then created a sketch and using geometry projected from the parts, defined the area of material removal at the corner and extruded the feature. Then, I mated the third part.
However, since I cannot turn off the extrusion when defining a view representation, I needed to redraw the corner I removed so it reflected reality when showing this first phase on the drawing,. I accomplished this using a sketch on the view in the .idw, again using geometry projected from the part. This worked out excellently in Inventor R11. Not only was I able to show the missing part, but because this was an iassembly made from iparts, I could use the same drawing for differnet sizes by "saving as..." and then selecting a diffenent Assembly State on the Model State tab of the Drawing View Dialog Box. The views would update, and so would my sketch, since it was defined by the geometry of the part.
So we continued on this way, and now that we've moved to 2012, none of these sketches appear anymore. We're faced with having to redo this work on every drawing that we've created for this part -- about 150 or so.
Aside from doing work over again, what solution do I have to this? Has anyone else experienced something similar? I really, really do not want to do this over again. The point of this kind of design automation is to save time, not to ensure busy work for myself whenever we upgrade.