1. Open mission editor.
2. Place the player as any type of BLUFOR soldier.
3. Place another BLUFOR soldier nearby (unit 2). Note this unit is automatically grouped with the player.
4. Place a static autonomous weapon (eg. Mk30A HMG .50)
5. Try placing another BLUFOR soldier near the player unit (unit 3). Note this unit does not link to the group.
6. Switch to group mode.
7. Try to link unit 3 with the player.
8. Try breaking and re-grouping the player with unit 2.
9. Place a group. Note the group of these units can modified.
10. Start a new mission or load any other mission. Group links for individual units will remain broken.
11. Exit mission editor (return to main menu)
12. Re-open mission editor. Place new individual units and group them. Note restarting editor fixes the problem.