DX7 question

Hi all, I bought a DX7 to use with my F550 and setup was quick and easy. I was just wondering how it was possible to save flight modes because I have 2 other quads. I bound to my 220qx and flew that for a bit then went to fly the F550 and it lost its bind. It's kind of a PITA and was wondering if anyone knew if it is just like that or did I do something wrong?

Thanks for the help!

Justin
 

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