If you cannot give anyone the @ status, is that because you don't have @ status yourself? If that's true, then you need to find out how you were given @ status in the other channel, and get it that way. Were you given @ by chanserv or by another nick?

If you identified yourself to chanserv in order to get @ status, then maybe the new channel doesn't have the same password as the old one. Sometimes channels have a setting where you must be on one of chanserv's access lists before it will allow you to have @ status.