Synchronization workflow step option - "Step only for dealing with conflicts"

The checkbox is only displayed if the dependency resolution is set to manual. But the name is somewhat misleading. The property is technically called IsPostProcessingStep.

This marks the steps that should only add references that could not be executed during the initial execution due to referential integrity.
Besides probably a few small differences, the biggest one is that no excess quantities are handled. Only quantity A2 is treated and executed.