AR unable to recognize revenue and thus import revenue lines not picking up anything .

The COGS Recognition entry is not getting generated in cost accounting for sales order.
AR invoice was final accounted and then we ran Import Revenue Lines and then Create Cost Accounting Distributions but still not getting generated. When checked, 'Import Revenue Lines' did not pick up any records so seems like the revenue did not get recognized in AR itself.

The AR final entry was :-

Receivable debited
Revenue Clearing Credited

Any insights would be helpful, thanks.