The first two systems I worked with using InterSystems technology were a PDP-11 running M11+ and a VAX 11/750 running M/VX. Too many years ago to count! 😊
Since then I've used most, if not all, InterSystems products up to IRIS and HealthShare today.
I'm Italian living in Switzerland and I work as Senior Consultant at GAIVOTA consultin SA, we provide professional services for InterSystems and other technologies.
Curiosity: apart from DC, I don't have ANY social account! 😁
😂
I think this is the expected behavior, in your sample code you are importing JSON to the same existing object, so it "add" (or update if you prefer) to the existing object.
If you want/need to import the JSON to a new object, then do so, and create a new instance before importing:
set r = ##class(User.ADGroup).%New()
Interesting