qBittorrent official forums

Hi, I have 2 seperate qBittorent PC systems at different locations with differing torrent files I host.
I do not have all the original .torrent files as the collection goes back decades, is in the terrabytes, and torrents are accross a few NAS's.
What is the best way to merge the 2 systems onto 1 PC ?

You can't.

I'd just copy all the actual data to the new "main PC" and then just copy over all the .torrent files affected.
Put the data into the default download dir, and all torrents via the "Watch folder" feature.

Then just wait until it all rechecks.