Update:  I just created an invoice using the "online" setting and the prior template is there now. I sent an invoice to myself to make sure and it has been corrected. At least for this one particular client. I will keep automatic reminders off for now though. I have completely lost trust in QBO that they won't do sneaky marketing behind my back. It affects my client relationships and even worse, their relationship with their customers.  This debacle has proven to me that they absolutely do not care about their accountant relationships.