@Jack-UK: Ohh, now i understand. You mean that does AI use suppressive fire? No, it doesn't use suppressive fire, these scripts just monitors what amout of suppression group has and adjusts it behaviour, skills, fleeing etc by that. There should be nothing that prevents from using these two in same mission.
Basicaly when squad is split the remaining part of squad is only monitored. The other half can be grouped to other group-name and then launched one new script for with that new group-name.
But there's one issue here: remining part of squad thinks that the other half is killed when they leave squad and by that receives a BIG amout of extra suppression. So here's what need's to be done to counter that:
1. Assign both halfs of squad to new group-names so that they aren't anymore known by that original group name.
2.The original script terminates itself as it thinks that whole group is killed. That way both half-squads starts from clean table.
3. After a while return that original group-name to remaining half of squad and launch new script for them or lauch new script with that new group-name. This way no-one has been marked as dead (unfortunately, also really dead ones are forgotten), and their will-to-fight remains better.