Hi @sixfootjames
Interesting…
ACF does have a filter called ‘acf/update_value’ which you could hook into.
This filter also sends through the $field array which it is saving to, so you can look at the $field[‘key’] as a way to run code specific to your desired field.
Basically, you could load the previous value, and if a value was found, don’t allow the new ‘different’ value to be saved by updating $value to the old value.
Does that make sense?
You will find docs on the filter over on the docs page.
Then you can use JS to add a simple disabled attribute to in the input for the client’s visual
Thanks
E
