Let’s say we have two customizations of the same element type, the actor. The first customization has the property group with the subgroup Subgroup 1 containing the property Prop 1 . The second customization has the same property group with the same subgroup specified, but the subgroup Subgroup 1 contains the property Prop 2 .
As a result, the actor element type will have My Group, with Subgroup 1 containing both Prop 1 and Prop 2.