Hi everyone, thanks for sharing about this. It is something we’ve wanted to support, but would be difficult to do since those partials are not accessible at that level. The partials are used to compose elements with similar functionality, but when the elements are defined I don’t have a way to distinguish which attributes come from the different partials, and somethings we use subtle permutations or overrides that make them different. We would love f for this to be possible, and it could be with more refactoring, but it isn’t a simple fix.
What we are planning on doing is making a copy/paste feature at the control level. For example, you could right click and copy a box shadow control, then right click and paste the contents to any other box shadow control.