Where is the data structure for the current torrents?

[sdfsdfsdf@byom.de]

looking at the transmission config, I see the settings, the torrents and the .resume files. However it seems that when I migrate .torrent and .resume files to another config folder the torrent does not show up in transmission. A grep using the filenames does not locate an index file - so where is this index? (clarification: not the torrents themselves but the list of torrents)