I want to move from SourceForge bug tracker to YouTrack.
I've got an XML archive of the SourceForge tracker, and I'm quite happy to do the work to convert it to whatever format (XML, CSV, JSON) YouTrack will accept as input. But I can't find any usable specification of an input format. There's talk of it accepting a CSV file via the Python client library, and vague mention of this being controlled by some kind of mapping file, but I couldn't see any detail that gave me confidence in the process. Is there a better way?