How to encode Strength Training into FIT?

Hi.

I'm working on a personal project to make entering strength training activities easier.  As a first step, I manually created a strength training activity in Connect Web and added a few exercises.

I then exported the corresponding FIT file and dumped it using the SDK FIT to CSV Tool.   When I look at the data, I don't see where the individual exercises are saved to the export FIT File.  I deleted the activity from Connect Web and then imported it again.  The four exercises I manually entered didn't seem to be imported.  Did those exercises get saved to the FIT File on export?

Here is a link to the export FIT Activity and generated CSV Files: https://1drv.ms/f/s!AhGO38HxSou3zLwpuV3KI1j3rJmhGw?e=p8WgVw

Any guidance, examples, documentation would be appreciated.

Thanks

-marc