I'm working on a project which requires crawling through all the HOL entries. Here are some possible "data problems" I've encountered so far.
Asterix and the Magic Carpet - was there an actual English release?
Mean 18 - Ultimate Golf - Misc Courses 4 (1987)(Accolade)[cr QTX][data disk] -
is on Turran, but not in HOL
Scenery disk
7 &
11 - they are available, HOL shows MIA entries