One of the things that I would like to understand concerns promoted properties and distinguished fields. If a property is promoted on the way in - in the FileHeader schema for example, then can that property simply be referenced in a message assignment in an orchestration, through a distinguished field?

Or does the target schema also need to reference these promoted propoerties - i.e. are promoted properties needed in the target schema as well.

When something is promoted - what exactly is being promoted? Is it the field element or the attribute? BatchNo or Value in our example?