It uses a total map-out of both the SCNR and SBSP tag classes to convert said classes with %100 accuracy.
I cannot promise that all maps will work, due to Intel only or other issues, but I can promise you'll never have a hole in your BSP.
Pearl has a very simple UI, which is very straight-forward.

Simply select your target, and if it's your first time, your full maps. Then hit convert.

A few notes:
•If you've already selected your full maps folder before, the application will remember it. If you ever need to change the location, just hit the select button again and it will remember the new location.
•The app will auto-remove black-base syndrome.
•Removes script chunks.
•More compatible with protected maps.
•If you encounter a map that crashes through a Pearl converting, yet works with QAR, please report.

Download 1.2
Download 1.3
1.2: http://halodemomods.com/wiki/File:Pearl.zip