Originally I had copied in everything from the vlab_20.2.3 branch, but was getting "Generated Warning is null" which I wasn't sure why. I then copied back in the original templates that we were using on edex1, then copied in the following impact based templates:
-impactSevereThunderstormWarning*
-impactSevereWeatherStatement.*
-impactSignificantWeatherAdvisory.*
-impactTornadoWarning.*
And updated the config.xml file to use these impact based templates.
NOTE: I did not include the non-convective flash flood warning because that doesn't work since we don't have the dam information.