Originally Posted by YusukeUramesh

Yes, but if I have 2000 torrents and I delete 50, how do I detect those 50 between the 2000?

What you mention only works if there are a few torrents, in my case that does not work because I don't know the name of the torrents and they are many torrents/files

The thing is that I deleted the .torrent without the content, so those files only get in the way and I want to delete them completely, I don't even remember the names of the torrents or the trackers

The only thing I can think about is to erase the whole contents of the seedbox, to be sure, but that would be very damaging to me since I have old torrents and things that I don't want to erase, even torrents where I am the last seeder

Only solution may be writing them all down. Let's see people who know IT has to offer.
@SpiderCrawler @isNN @UntouchableFC @Rhialto