I’ve recently upgraded to version 5, and have enabled the JSON feature.
The custom fields still show up on my post editing screens, however when I go to the Custom Fields editor my field groups are missing, preventing me from make any change using the interface.
Any idea of what might be happening?
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Did you find the solution to your problem?
Sorry, I missed James answer. I’ve stopped using the acf-json files for sync so Im not sure what went wrong, neither im able to replicate the issue now.