Am I correct that if we turn on the National Accounts feature, that for those "sold-to" customers we have assigned to a "bill-to"/National Account, the DATE OF LAST ACTIVITY will only update on the Bill-To Account, and not on the Sold-To account because all AR/SO Invoicing and Cash Receipts would only post to the Bill-To. 

Has anyone had success creating a UDF that would populate on the Sold-To customer file (Date of Last Invoice and/or Date of Last Activity) when there's the applicable activity at the Bill-To Level for that Sold-To account?

Thanks