You can open up old missions in the mission editor and replace units with new 2.640 units. Though you may get some unbalance in the mission. You need to test them and add/delete perhaps extra units. I am sure more new missions will arrive during the coming holidays.
Personally I enjoy my time in the planning phase, studying the map, use the LOS mode and plan the first waypoints for my platoon(s) to tactical positions. From there I start the mission and see if I made the right decisions and make new ones.
@Magnum For some reason I see you as a M1A1HA platoonleader, waving to the east and yelling in the comms: "Rusky overthere! Sabot up! Fire!" Without reading briefing, planning ect. I could be totally wrong here so correct me! LOL

No offence m8
