I have an assembly (IV6) in which I have used the IPN to create an avi file. What happens is when I go back to the assembly and edit any part, even changing the color of a face, the tweaks in the IPN get fouled up. For example, 2 of the parts get moved 10 feet above the rest of the assembly. There are so many tweaks in this IPN that editing all of them would be impossible and just redoing the entire thing would be easier. Anyone had the same results?