Absolutely brilliant, I have tested it on F1 2019, works perfect. Recently got F1 2020 and tested it's files, doesn't work but as you didn't made the 2020 version yet I found out Your erp and mipmaps do work with Ego ERP Archiver 7.1.0 by Ryder25 so I converted and imported it and it worked like a charm. Do you mind if I share it giving it the proper credits to you? Thanks for this one, surely all credits goes to you.
https://mega.nz/file/vzYjUYzA#N04LSn_MTer_xG6GaMT9WFsvy4LDaE5ZMWILx4yVbow