OOB mappings can be located by going to CSDM > Life Cycle Mappings. If the legacy mappings have been altered, then they would need to be adjusted here.
Here is a screenshot
I recommend reviewing the documentation at:
You may also find the following video usefule:
In this CDSM V4 Discussion, Scott Lemm and Mark Bodman provide a deeper-dive perspective on the 2 new Lifecycle fields (Stage and Status), and what shifting our focus Product Models in the future means. We address topics such as the types of lifecycles, how Product Model references are evolving in
