When I compress my maps into a bz2 file the players end up getting missing map errors but when using my server's fastdl sync which automatically bzips the files then they work after moving into my actual FastDL.
We use a different FastDL provider so we manually add in the compressed files.
I used 7Zip Mass Compressor batch file to do the files. It use to work but I do not know why it doesn't work now.