I am trying to create a new content type named 'Test Content'.
I add some fields and content parts to my new content type.
Now I added blog as a content part and saved my changes.
The problem is, when I click to create the 'Test Content', all the content parts and fields vanish except for the ones which are associated with the blog content type by default.
Is there, any way to preserve the content parts and fields which I add myself, while adding a blog content part as well?