Drag & Drop child entity to another parent

[cannibalflea]

Although not exactly the same, I was thinking along the same line but hoping for a way to copy and paste (or better yet drag and drop) an entire collection from one entity to another in this request:

Copy Collection/References

I wanted to propose a copy collection items feature that would allow users to just copy all linked references in a collection and add it to another collection of the same type. For example, it would be possible to copy a list of attendees from one meeting entity and that same list to another entity. I know you are able to duplicate entities, but I think this need sometimes comes up after the entity has been created. While this is UI function (through a button or keyboard shortcut), I also wonde…