Twice in the last 3 weeks, the settings for showing the pdf version in the body of the emailed invoice spontaneously became unchecked. I am the ONLY user so there is not an opportunity to have "accidentally" opened the settings tab and changed them. Tech Support had be follow the steps to correct the issue, only to have it happen again today. My many clients have emailed me to point out that "the pdf was missing and could I please resend".  

The new Tech reassured me that he would report the issue to the Intuit engineers.