23D Configure Contract Approval Notifications

Summary:

I see this feature was opt in in 23D, but when I enable it and deploy a customization the approval notifications in BPM are not the new style, nor are all my customizations visible? Is this only for email notifications? Or are BPM included as well?

Content (please ensure you mask any confidential information):

link to 23d release notes: https://www.oracle.com/webfolder/technetwork/tutorials/tutorial/cloud/r13/wn/proc/releases/23D/23D-procurement-wn.htm#F28715

Version (include the version you are using, if applicable):

23D

Code Snippet (add any code snippets that support your topic, if applicable):

NA