Hello folks,
I'm developing a custom payment gateway module and need to trigger a hook after the admin clicks "Save Changes" on the gateway configuration page (configgateways.php).
I can see the POST request with the correct credentials (like App ID and Token) in my browser's dev tools. However, my hook isn't being triggered at all.
ChatGPT suggested a GatewayConfigSave hook might exist, but I couldn't find any official documentation about it. I also tried AdminAreaPage and similar hooks, but none are reliably triggered with the config save event or POST data.
Has anyone else run into this issue? Is there a recommended or undocumented hook to use when saving a gateway's settings?
