What does the option to link a trigger zone to a unit do?

[Hairdo1-1]

In the 2.8 update the create trigger zone menu now has a link to unit option. This seems different than using a trigger to create a moving zone. One thing I have found is that using it will make the zone move with the unit (but not center on the unit)in the ME but does NOT create a zone that will move with the unit in the actual game. It also seems to break the functionally of the zone when using it for triggers. I’m trying to figure out what this does and how to use it. Anyone know anything??

Edited October 29, 2022 by Hairdo1-1