Customer Ref No does not pull on journal entry for AR Credit Memo

Hi All

I have seen that when  a stand alone (not based on an AR invoice credit memo is done and the Customer ref. no field does not pull on to the correspoding Journal entry. It does how ever when you copy an AR invoice to an AR credit memo..

I tested this on SAP8.82 PL09..is there a work around? I had a look at note 541627, but it did not help.

Thank you

Jerusha