Hello, I am trying to update existing model with new added custom data list which I created in Spec. Editor. With new components is working but how to add it to the existing one? I tried ChangeSpec, CONVERTFROMPRJDATA, no luck.

I solved it.
In piping rules "Apply change data rule" Custom data was checked by default probably. Now with CONVERTFROMPRJDATA I can easily update my model

Yeah that rule has caught me out a couple of times.