Sorry, but this makes no sense. We have unlisted apps approved all the time. Why did you have to make a B2B/ABM version of your app? That's just not correct in most cases.
The only reason to make a copy of the app is if the original app was B2B, in which case you need a non-B2B version for unlisted app status.
Topic:
App Store Distribution & Marketing
SubTopic:
App Store Connect
Tags: