The other commands that do similar things are:
#missions - will select a new mission, when that mission is over Arma3server picks up at the spot in the mission rotation where it left off.
M1 -> M2 -> #mission -> M3 -> M4
selecting Mission via Rcon - will do the same as #missions
scripting command 'endMission "END1";' executed global - will end the current mission and go to the next one in the rotation (this is what the proposed 'advanceInMissionRotationBy 1;' would do.