Yeah, can one of the devs(or anyone knowing it already) please shed some light on this thing?
You don't need a dev for this ...
Is it to hard to just try?

Start a multiplayer, save it, go back to menu and load it. Takes 1 minute, definately faster than waiting for a dev to answer...
But for your interest: Saving and resuming a multiplayer game is possible. Important note: every participant has to have the same savegame present on their machine. Because of their size, the savegames are not automatically synced between the players.
If for example one player leaves the match, and the other one saves the game after he left, the leaving player won't be able to continue this game. Only option would be that the savegame is sent to the users (via email or one-click-hoster etc.). But then there are different problems with the displaying the companys vehicles. So this would be only the last resort.
Try to play with all participants always, and only continue savegames, which all participants have on their PC. Then saving and resuming a multiplayer game is no problem.