I was looking at a feed and wanted
a copy of the feed in a subject Folder.
I was prevented in making a new feed, because it
It such a duplication, (or shadowing) possible?
unfortunately this is not possible.
Of course you could try to insert the duplicated feed into the db using SQL.
But I don't know how QuiteRSS reacts on such a duplicated feed because I never tested it.
Honestly I don't really think it's a good idea to do this.