Flights mode?

Hello. I have a Cheerson CX20 and I have a problem and perhaps you can help me.
I´ve lost my flight modes… I go to go to “Initial Set up> MAndatory Hardware>Flight modes>” I set up my flight modes and click on “Saves modes”, but really my quad doesn’t save these flight modes because in the display of flying (“Flight Data menu”) in Mission Planner, when I select one flying mode in my transmitter it doesn’t appear in this screen. What do you think that I´m doing wrong?

Thank you for your help!!

I’ve just ran into the same problem after updating MP from 1.3.25 to 1.3.27
I then upgraded to 1.3.28 will still not luck.
I double checked the firmware on my Pixhawk and it’s running 3.2.1 with is still current.
Any suggestions would be great.