i can spawn custom groups for say mod factions just fine in a zone,but when i choose to spawn fast-rope or paradrop reinforcements for that faction, they do spawn but it spawns weird things like groups of vehicle crew members instead of infantry or groups of 2 riflemen and 2 grenadiers

my question is, if i create in mcc a custom group made up of a roster of units i choose, is it possible to spawn that group in via paradrop or fast rope?