In v12+, if you change a property alias on a content type that is in use in a BlockList you will lose the original data because the property data is stored within the content node property data. Is that right? Ideally there would be a way to make changes like we do on standard content type properties so that data is not lost. It would of course involve inspecting and updating all nested content property data which is not a lot of a fun. Is anyone handling this themselves at the moment?