So long as they are the same protocol ie FHSS TX and FHSS RX you should be ok 🍻
I fell foul of that when i upgraded my DX8 to DX8 G2 my old DSM2 RX's wouldnt work with it luckilly it was only 2-3 RX's had to change and keep old DX8 for 3 or 4 micro hellis i had lol 🤣