New parameter added to a view does not propagate to instances of that view in Perspective

Thanks for this feature, @Carl.Gould and @cmallonee . And thanks for the explanation!

I'm finding some problems in the way the 'parameter' list is being populated from the embedded view, however. I've removed some of the parameters, but they are still being shown in the list.

Current parameters:
image

Visible parameters:
image

Do you have any information on how the list is populated?

Here are other posts related to this problem:

Thanks for any assistance!