In the Accounts Receivable module, in Reports, select Invoice History Printing.  Change the 'Invoice Type to Print' to Sales Order.  Select the desired 'Paperless Office Output' choice.  In the Selections grid you can then enter the range of Invoice Numbers to reprint.  By default the 'Line 1 Message' is "* THIS IS A DUPLICATE INVOICE *".  To avoid confusion for your customers since the first copy never was sent you could clear that.

thank you so much Steve. This was exactly was I was searching for.

Appreciate it.

You can even take that one step further:  www.90minds.com/.../mas-90-and-mas-200-onesy-twosy-report-selection-criteria

When running a standard Sage 100 (fka MAS 90/200) report and you need the ability to easily pick and choose a non-range of values (e.g., 10 specific Customers across your entire Customer Masterfile), simply use “Equal to” and separate the values by comma’s, no spaces (e.g., 0032987,0076352,0919283,0000111).