I highly suspect this to be the case. Which is very odd. I'm wandering into territory where I figured I could rely on some basic assumptions I just can't rely on it seems. One thing I wonder, since I can't look into it now... do those invisible units showing flags eventually lose the flag? Is it just something that comes in when the unit is spawned perhaps and then vanishes later? This is part of the point of the graphic modification. On Size Matters, units should now be showing as many models as they have group volume ranks (when fully healed at least.) This means that you can now see at a glance that captives - military are a volume rank 4 unit (Squad I believe).