When you have two apps with the same content-type and wish to sync the fields from a Source to a Target, do this:

Before you Start

Ensure that they have the same Static Name. If they don't you must:

  1. either update one of the Static Names
  2. ...or skip this and Update/Synchronize manually

Do the Update

  1. Export the schema from the Source
  2. Import it in the Target
  3. Review the fields in the Target content-type, ensure it matches your expectations
  4. Test the result