Accounting attribute assignments do not change upon selecting business flow.

I am trying to create a journal line rule for accounting credit memo application, where the accounts are picked from the accounted receivable values of the invoice being credited as opposed to the invoice distributions.

When I create the journal line rule and select business flow as below:

The accounting attribute assignments are not changing to reflect the above selection:

I expect to see an accounting attribute relating to business flow as below:

How do I fix this ?