When you update a parent content type, the following consideration need to be taken account:
- Settings of child content type column would be overridden by setting of parent content type column
- If you make some changes in parent content type and don’t push them down to child content type, these changes would not be pushed to child content type on later stage.
- If you delete any column in child content type, they are not created again when you push changes from Parent content type
- Read-only and Sealed child content type will not be updated and an error would raise