LauraG.  Thank you.  Your steps are essentially what we have decided to do as a workaround until Quickbooks decides to actually fix this.  We create maybe 10 invoices a day, give or take a few.  Our plan is to create the invoices through out the day in the Online Invoice mode.  At the end of the day, 1 person will go in and change to HTML, email all of the invoices and then reset the setting back to Online Invoices.

We've discovered that the Card payment option and the ACH payment option must be enabled for the View Invoice payment button to appear in the email.  We would prefer to only take ACH payments but if we turn off the Card payment option, the View Invoice payment button does not appear in the email.

Thank you for your observations and comments on this.  It helped me.