I found that if a file being seeded with ktorrent was moved from its location, when ktorrent starts it shows an alert asking to recreate the files or not downloading. If you choose not to download, the torrent stays in red color and nothing can be done. I think it would be useful to have an option for changing the download folder, so when a torrent is in this state, you choose the folder where the data is located and start seeding again.

It may be related with this feature request http://ktorrent.org/forum/viewtopic.php?t=834 that by the way, I saw you added the feature to open the directory.

Congratulations for all this work, it's getting better every day.

We were planning to add a feature to allow moving the files. Until then I suggest you learn to use symlinks.