Should have all of raid servers in your favourites, useful if the master server is down.
Download this file - http://lossy.raid-gaming.net/downloads/servercache.dat
If you're using the CoD4X1.8 patch go to
C:\Users\Username\AppData\Local\CallofDuty4MW
then drag and drop the file there.
Stock CoD4 users
go to where you're cod4 is installed and drop the file there
If you don't want your favourites to be over-written/lost set the file to read only.
Let me know if any of raid servers is missing. Thanks.