Can I import download data of qBittorrent from Windows to macOS and download them continuously?

[yujinlin0224]

Please provide the following information

qBittorrent version and Operating System

qBittorrent v4.1.0
Windows 10 (1803) / macOS 10.13.4

What is the problem

I want to transfer my major use system from Windows to macOS, I want to move some torrent I have not finished to download on qBittorrent on Windows to macOS and download them continuously. It that possible?

[Kolcha]

short answer is NO.

but this is possible. all you need is move BT_backup folder from your Windows (C:\Users<YOUR NAME>\AppData\Local\qBittorrent) to your mac (~/Library/Application Support/qBittorrent) and then re-assign path for downloaded torrents (qBittorrent will complain about missing files because "last download path" is hardcoded in ".fastresume" files in BT_backup folder and it can not be found on your "new" system). qBittorrent will re-check downloaded data and then continue.

I wrote python script exactly for this case, but it is usable only on Linux :'( , so it will be not helpful for you.

some technical details: everything you need to correctly "import" downloads is just edit ".fastresume" files changing download path in it. these files also store download progress and download/upload statistics (like total uploaded, when torrent files was added and etc.)

[thalieht]

EDIT: Better do what the post below says.

I was just writing a long answer saying that you can with what @Kolcha said with a few differences:

1. Pause all torrents in windows qBt.
2. Copy what's already downloaded to their new location including any .<hash>.parts files.
3. Copy the folder with .torrent and .fastresume files to the equivalent location in macOS https://github.com/qbittorrent/qBittorrent/wiki/Frequently-Asked-Questions#Where_does_qBittorrent_save_its_settings. (I don't think it's advisable to copy the preferences folder as well because there may be some differences between the OSes but if you want you can try(i don't know if qBt uses .conf or .ini in macOS for the preference files. You may need to rename the .ini to .conf)).
4. Open qBt in mac. The torrents should be paused as you left them in windows. Now select them all ctrl+a or whatever is the equivalent in mac and Set location... to where you moved them. (Looks like there is a bug and Set location... overwrites/deletes existing files.)
5. Resume them.

Not sure if 4. will work though. You may need to recheck them anyway.

[sledgehammer999]

You should probably follow these instructions instead: #8879 (comment)