Picking Ticket and Invoices with mixed line items? Weird!

SOLVED

Running MAS90 4.4. We've been getting this problem intermittently for some time, but more frequently of late.  Customer information and Line items from sales orders previously entered (normally the sales order immediately before the present) are printed on following sales order picking ticket or invoice.

In other words, information on the previous sales order is merged on the present one, but ONLY when printed. If you open up each respective Sales Order the information is correct.

Any else have this problem? I has me baffled and can't seem to find any relevant postings with this problem.