Using BI Explorer to view AR Invoice History, and making sure BIE pulls all available invoices, and no filters are involved.

Some invoices are not in the list of customer History Invoices?

The invoices appear in Customer Inquiry and in Invoice History Inquiry, and for all purposes look normal and fine.  The invoices also appear when CRW is used. 

But using BIE, there are a number of invoices that just do not get included.

Why?