This is still occurring. Here is a thread with the bug reported back in July.
When I copy and paste an object that has an interaction using variables, all the variable connections are lost. The only way to duplicate is by clicking and dragging with option pressed.
Hi @Phil_Larsen thank you for raising this, it looks like you are encountering a bug that we are currently tracking. Our engineering team is actively investigating this and I’ve passed this information along to them.
Hope this gets resolved soon, its very frustrating to have to reconnect all the variables every time!