Comment 48 for bug 350407

Stephen: see bug 115107 comment 88 (that suggestion also applies to this bug - the suggested fixup interface could collect the URLs it fixes up and pass them to StoreURI, thus causing the URIs referenced from @import to be saved). I actually half-implemented that suggestion and it seemed to work fine before it fell off my plate :(

I can help you with the easier things, as time permits, if you take that approach.