Removing Sub-Assets

Drag and drop

To remove one or more sub-assets from an asset, simply select all the assets you want to remove, and drag them into an empty space in the Project window (or directly to another folder).

Dragging two sub-assets out of their main asset

Just like that, the sub-assets will be extracted and become individual main assets.

SecondaryMission_1 and _2 are now independent assets

Extracting a sub-asset like this is immediate, and doesn't present a confirmation window.

Delete using a shortcut

If you want to delete a sub-asset and not remove it, you can also select it, and hit Delete, or Ctrl+Backspace (Windows) or Cmd+Backspace (Mac).

Confirmation for deleting a sub-asset

When deleting a sub-asset this way, Unity will present this warning in the console:

The operation "Delete" cannot be executed because the selection is a root folder.

You can safely ignore it.