I’ve had problems with Gravity Forms + Custom Post Types since Gravity Forms moved to version 1.9. In my case, both creating and changes to a taxonomy selection via checkboxes doesn’t save. I rolled back gravity forms to 1.8.X and that allowed all fields to be updated.
I’m having this problem with genesis, but only some genesis. I have this problem with the genesis base theme. I have this problem with some studiopress child themes (beautiful pro has the problem, sixteen nine pro does not). I do not have this problem with my own completely custom genesis child themes.
Twenty Fourteen, everything is good.
It’s quite perplexing.
I observe this on a multisite, but I don’t have any single site setups that use the themes I’m having trouble with.