I can't subchannel mapping to work at all using either CM1 or CM2.  I can enter subchannels in the appropriate places but nothing happens. It seems the transmitters and receivers are "hard assigned" to slot 1 - 4 respectively. If a slot is empty, it's transmitter or receiver is unavailable for use. The CM modules can be successfully configured using SNMP so I'm fairly certain they're not the problem.

Well folks, it looks like we have the same problem with the legacy CABs. I know advanced mapping works in MWare so it must be a bug.