Torrent has moved from Seed to Download section

[azureus-user]

I downloaded a Torrent file, then left it to seed. It started to seed for a while, then I stopped it, as it was slowing down some webpage viewing. When I restarted it, it had a 'queued' status. For reason unknown, I clicked on the 'Force start' setting then, shortly afterwards, the file automatically removed itself from the Seed pane to the Download pane.

Is there any way of getting it back to how it was?