The original campaigns are decrypted so that other people can't steal or cange their work, I would also like to know how they have made their missions.
Ofcourse you could use the setpos command to teleport the units and objects in and out of your base using camera.sqs to set the coordinates but that would mean a lot of work(time).
If your aware of the setacctime command it could also be helpful in this case.For exemple setacctime 1=normal setacctime 0.1=very slow and setacctime 2=twice as fast as normal.
I Don't know if I've been of any help but this is as I understood the question. Reply or e-mail me at xenofanes_op@hotmail.com if you have anything you wantto ask me or want to specify your question.
Looking forward to your respons...