OFI GST - Tax Defaulting on Manual AR Credit Memo

In the third party registration setup, we could give the tax category details to be applied / defaulted for standalone invoice.

This is working fine for Manual AP Invoice and AP Credit memo from P2P perspective.

In O2C perspective, its working fine for Manual AR Invoice but its not defaulting for Manual AR Credit memo. i.e Tax is not defaulting for Manual AR Credit memo from Third party registration setup.

I dont know what is the issue here ? Is that the intended behaviour of the system ? Pls clarify.

Thanks.