BRP Compendium Module - Genii-Locorum/brp GitHub Wiki
As of version 12.1.30 the various compendia have been removed from the main system and bundled in a separate module (Basic Role Playing UGE compendium).
The aim is to allow you to import the various items etc to your game world, edit the items you want, delete those you don't, and the create your compendia, before removing the module.
If you leave the module installed, the game will still be able to access all weapons, skills etc (e.g. Energy Weapon would still appear as a Weapon Skill option in your fantasy world - or the Supernatural Skill Category would still be available in your sci-fi world).