Using SharePoint 2013, we have a set of custom content types that inherit from each other. For example, LLAbstractRE and LLAbstractNonRE inherit from LLAbstractBase which inherits from LLBase. Unfortunately, these content types were set up rather haphazardly so some site columns aren't really where they need to be or they are in multiple content types when really they should be in the LLBase content type and simply be inherited up.
In the interest of efficiency and maintainability, we need to clean up our Content Types. To do that, I'm trying to figure out where each of the Site Columns in each of the Content Types is inherited from. In the Site Column list within the Content Type, I see a "Source" column. But I can't find a property that corresponds to that column. At first I thought it might be SourceId but as I looked further, I was wrong.
I would really appreciate it if anyone can point me in the right direction. Thanks. Carol.