Might be worth starting a new topic on this one, Walt. Because most likely the issue is that you're using Windows 7.
Premiere Elements 2019 no longer supports AC3 Dolby Digital audio but depends on the operating system to provide this support. And that works just fine if you're using Windows 8 or Windows 10. But Windows 7 does not offer AC3 support so neither does Premiere Elements 2019 on a Windows 7 computer.