[lassizci]

Are you sure it works with TF2?

I tried to put cp_gravelpit.cfg to /path/to/tf2/orangebox/tf/maps/cfg/cp_gravelpit.cfg
and
/path/to/tf2/orangebox/tf/maps/cp_gravelpit.cfg
and also to
/path/to/tf2/orangebox/tf/cfg/cp_gravelpit.cfg

The file contained only two things:

mp_timelimit 40
echo "cp_gravelpit config loaded"

I restarted the server with +map cp_well and changed level from server's console to cp_gravelpit

my server.cfg has mp_timelimit commented out so it defaults to 30. There was no change to timelimit after changing map. Neither didn't the server's console echo the line the config suggested.