its fucking CASE SENSITIVE for tags! books that use <BBeBXylog>, <BookInformation> etc, don't work because lrs2lrf.py is hardcoded to look for lowercase tags only
I wonder if lrf-lrs conversion was different back then, or if lrf ebooks actually store case for their tag data and all lrf books back then used lowercase??
Or maybe this janky crap never worked right, who knows