Ignition 8 with 7.9 Edge server

Hi,
I’m running Ignition my main gateway on Ignition 8 and I have an edge server on Ignition 7.9. It seems like it should be fine, but I was wondering whether anyone has had any issues running the two together? If there are I’ll downgrade to 7.9 for both due to the needs of our application.
Thanks in advance,
Andrew.