We could have had a whole new set of courses :-) Control placements are known, providing you hadn't thrown out the map you used for taping, and you could have joined them all together in a completely different way. Not that you have time for such frivolities at the moment.
(I wasn't looking forward to the worst-case prospect of riding all the tracks looking for bits of tape either!)
I still have the map of all the controls but the only course map I had was course 1. I wasn't looking forward to remeasuring everything on all new courses because I don't have time for that. As it is, this new course 4 I'm setting will take up a chunk of time for measuring purposes because it's totally different other than the start and finish.