Hi,
Just to report this is still an issue for new pro users. I deactivated 4.4.6, installed 5.3.7 and didn’t get any flag to upgrade database to comply with acf pro upgrade.
I tried the workaround and got undefined option error (update_option(‘acf_version’, $options[‘version’] );) however, when I reverted admim/update.php to it’s original version and visited /post_type=acf-field-group my old 4.4.6 fields showed up ok.
***The script is triggered on each page load so multiple versions are created if you don’t realize what’s happened!***
This is a sketchy experience for pro upgrade, no?
