... It also seems to confuse the story mode, and tasks switching forward to the tasks located with the last spawn point.
Thats exactly the problem i had yesterday. I tried to work around for hours - without success. I figured that it was caused by the second Spawnpoint but i dont want to build up the whole map again (its full of additional objects - by the way: how about a Duplicate-Function for maps and/or objects?).
That would be a wonderful, wonderful thing. With wonder.
Except for one problem, which I just encountered. There's a limit on the number of maps you can have on each mission. I believe the limit is ten. Sounds like quite a lot, but if you have multiple instances of this workaround, it can add up fast.