I have various assets I've created and I often want to copy part of one over to something new I'm creating, and yet I can't open multiple documents to be able to copy and paste between them. For example, I want to use a portion of a graphic in another new graphic I'm creating, and I want to open the existing one, ungroup the items, select the part I want and copy and paste it over into the new document. I can paste the original item, but it pulls in grouped together as one image so I can't grab just the part I need.