Ok. I found the problem. The custom module which exports the field config cus...

Ok. I found the problem. The custom module which exports the field config customization was being called before the base gdpr_fields hook. Due to which the customizations done in the custom module were getting overridden.

Workaround could be to increase custom module's weight, if you want to use the same fields. Otherwise you have to create new GDPRFieldData with a different field_name.