Most of the beta maps are voteable, they are linked to the sst host for the infobase.
As for the ATCS alpha, that is a problem, avenger fixed it, and we are waiting for the new version to go to the infobase.
The problem is the bsp file in the pk3 was named the same for both versions, and that is what the game recognises. Avenger fixed it so it is atcszalphab1, by renaming the file, and when mega updates the infobase, it will be on there. I know how to do it for the server, so i have 2 copies, but one of them is locked out.