DN-X1500S Master Cue problem: always off when split cue exit

The latest firmware installed (6796/DSP2020). The firmware news say: “When Split/Cue selected, the Master Cue is now ganged together to turn on.” The big problem: after exit split mode, exit Master Cue! (I’m not used monitor speaker, need always on Master Cue.)

If plit selected, Master Cue not automatically on (firmware info say: “turn on”), need turn on manually. Split unselected, Master Cue off. This is a problem! What is a earlier (downloadable) firmware, to still on Master Cue?