Half of the useful data has been removed from the database. Important stuff, like what race/class combinations can use an item, and so on.
If you're going to change something this vital, please put a test version up before replacing a perfectly good, working system with a broken one.
Edit: I should add, I like the new, larger format, but not at the cost of vital information. Long ago the drop mob and other information was already removed, but we can live with that. The latest missing information is vital, however, for planning your characters.