OSTHEER IS DONE WHEN IT'S DONE!
The Miss drop map didn't have too many fuel/munition points, it could be hard to balance.
Saved games and replays don't work on custom sga maps. Either you extract the sgb and the other files and place it in "C:\Users\%username%\Documents\My Games\Company of Heroes\WW2\Data\Scenarios\MP" or you list the sga file in your COH/EF module file, however then you can't play online anymore. So I'd recommend you to extact the files from the archive, if you wish to load a saved game.