LWR B2B Integration classes not executing

I have setup LWR B2B store according to the documentation.
I can see below information during script execution:
However when I place an order none of those classes are executed.
I am testing it on preview 60.0 api scratch org.
I checked if classes are registered and if they are mapped, all looks fine, but I am not able to see them in the administration tab for the commerce

For example in my production org where we use Aura B2B commerce template it looks like this:

I am investigating LWR capabilities for commerce, however I am unable to setup integration classes to work as expected.
Please advise