One more thing ...
Just to simplify the discussion, what we have here are two issues :
1) switching from CWU to CWL on CEC V1.08 incorrectly changes the TX frequency (it should remain fixed) wheres it should be the RX frequency
that moves due to the change in sign of the applied RX offset and the change to the BFO frequency to match the selected sideband.
This is a bug.
2) The issue of what frequency should be displayed. (Currently it is the RX frequency).
Options are :
1) Display Tx frequency - will not change on display when moving between CWU/CWL. Will not change on TX vs RX. (Recommended)
2) Display Rx Frequency - must change when switching CW sidebands to be accurate.
Recommend it change to TX frequency and back when switching between TX and RX so operator knows what actual carrier TX frequency is.