When exposing mounted volumes on a network, the user expects drag&drop to default to copy (not move from local disk).
This UX is kind of standardized when connecting a thumb drive or usb ssd drive. So I find it confusing why we can't define in FileProvider the UTTypeVolume to ensure the user gets a more expected copy-on-drag behavior.
Please let me know if there are ways to achieve this that I've missed. i.e. I want both "drag to" & "drag from" a file provider volume to result in the green "+" (without having to teach the user to hold the alt-key)