Set the decriptions of these open transactions to match the Hold Invoice Indictor Text in the Pay Account window. By default the Hold Invoice Indicator text is *HOLD* – if you add *HOLD* to your Descriptions of these open invoices Pay Account would not include them in it’s Confirm Payments Preview. You can use any text you want, find a commonality between your open invoices descriptions that you never wish to pay and use this text in the Hold Invoice Indicator Text value in Pay Account.