Hmm, dlc file is 2.3M, jdc 6.6M, so you're probably right, that database is quite old. But making new config is not possible - it will delete download history, thing that i try to avoid.
And that reminds me about other Bad Design Idea - make impossible to export and import [tested dlc and jdc, and they are hilarious] links without information that file status is 100% downloaded or not…