How to add priv. torrents while merging trackers in already existing torrents?

[slrslr]

Some of my torrents are tracked by multiple private trackers.
After copying the torrents to my seedbox (apt install qbittorrent-nox # 4.5.2 WebUI) watch folder, it imported the torrents without merging multiple trackers into one torrent. How to fix this so I can seed existing torrents to all trackers? My idea is to run multiple bittorrent clients, but that seems inefficient.

[slrslr]

One workaround to do it, is to use source qbittorrent client where I have multiple private trackers in a single torrent/s. select all such torrents, mouse right click, Export. Go to a seedbox, delete all torrents (keeping downloaded files), copy exported torrents to the seedbox watch folder. It should load all torrents and automatically find the payload data (unless the path is customized?). Such imported torrents should contain all trackers.