XD (Experience Design Beta) Manage: assets vs. links to assets

1. I shared a link to an XD prototype.
2. I would like to keep the prototype, but make the link go away.
3. Going to assets to delete what I **think** is the link gives me this dialog (below).
4. Given the nature of files on the cloud, I'm not sure if I'm going to delete my file (the prototype), or the link to the file.
5. Is a copy of the file referenced by the link stored in a separate, temporary location from the file I want to work with?
6. If yes, why is this poorly worded? Shouldn't it say "Permanently delete the reference file [TK]? Your original file will still be available to you," or some such?
7. If no, what the hell?! and how do you get rid of a link you've shared, other than by getting rid of the file, or moving it, and causing all kinds of other directory/linking problems?
8. I did check the other answers on the forum. The answer to a similar question (I think) on this last point wasn't clear to me.

Danke!