RMCVNEUF....billing document not updating

The business recently made a change to the Item Categories that update LIS/SIS. They want us to load all historical documents with this Item Category to our SIS structures and DW. There was a change made to RMCVNEUF to allow for us to search all billing documents where Item Category = NLC, allowing us to use the statistical updating program to load only the historical documents wanted.

As a test, I found on NLC document and run it thru RMCVNEUF. I have checked the Redetermine Update Group check box. I get a message back saying: Data from billing document 9000878658 was not updated

Message no. M2210

Diagnosis

Data from documents used as a basis is required for the processing of billing documents.

System Response

The data in the billing document 9000878658 will not be updated

System Response

Ensure that all sales orders and delivery notes are processed before the billing documents.

NLC item category is now configured in SPRO to be statistically relevant. Why would this not update using RMCVNEUF? Config was changed on 4/16/10 to allow for NLC to update. It seems any document created with this item category prior to that date will not be updated using RMCVNEUF? Any ideas? Not sure of a better/easier way to get only the documents we want to load to SIS and then DW.

Thank you

Theresa