I know you can not convert the AIM KC-10 model because you don't have permission, but have you thought about asking the guys over at AIG if MAIW can use their AIM/OCI program to convert the KC-10?

It's certainly interesting how AIG avoids the permission problem with their local conversion script. I have thought about how I could make that work in Matrix but it would require considerable code and workflow changes, since Matrix downloads entire packages from our own server with everything included while AIG fetches its source data from many different websites and compiles everything on the local PC.

At the moment, OCI only offers models if they are required for a flightplan. Asking them to offer the KC-10 (or other models like Fernando's Transall) would require them to start offering military flightplans in OCI. I don't think that's something that's on their radar at the moment.