Decentralised Invoice Processing

I have one OU and one Org under that OU and both have been classified as Project Invoice Collection Organization. I have done the setups for Decentralised Invoice processing and got created the Transaction types(both invoice and Credit memo) with Organization name also in Receivables for respective orgs. I created a Project with the Project Organization as the OU. Now I create a Project Billing Event with the Organization as Org which was under the same OU. I generated a Draft Invoice for that billing event and approved and transferred to Receivables. There I have imported the project invoice into Receivables. But this invoice