rtorrent - How to keep information for reseeding later

I have box with internet connection and limited space. I have also much more space offline. I download fime files with **rTorrent**, share them for some time, then move them to offline space to be able download more files. **Sometimes later somebody asks me to share those files again, so I would like to put them back to sharing, but I do not know how.** --- Details 1. **I download magnet URL** ( magnet:?xt=urn:btih:12345.... ) 2. cd ~/torrents 3. echo "d10:magnet-uri${#1}:${1}e" > "meta-${BASH_REMATCH}.torrent" # create meta-12345...torrent 4. rtorrent downloads 12345...meta to ~/torrents/Downloads 5. rtorrent downloads and share ~/torrents/Downloads/some_dir/some_files* 6. I stop rTorrent, **move** all Downloads/some_dir **to offline storage**, free the space 7. much later somebody asks to share some_dir again (as no seeded is active) 8. I copy some_dir from offline to the box ~/torrents/Download/some_dir 9. **What now?** How to say rtorrent, to share it again under the original magnet?