Unable to publish API Spec to exchange, have both the Design Center Developer permission and the Exchange Administrators role

Based on this article, I should have access to publish API specs from Design Center to Exchange:

https://help.mulesoft.com/s/article/Anypoint-Platform-permissions-explanation

There are 2 business groups defined in this Anypoint instance, in the root BG I am able to publish to exchange but not in the other BG where I'm working out of. Don't see any other obvious configurations in access management, what else might we be missing to allow this access?