Inventory Audit Report

Good day all,

My client is running 2005A Patch level 22. The cost that posts o the G/L differs from the cost that post to the Inventory Audit Report, ONLY for the A/P Credit Memo's. This causes the Audit Report to differ from the G/L.

Does somebody know if this is fixed in a later patch and if so, in which Patch? I cannot find anything in the SAP Notes.

Kind regards