Import of Zwift virtual cycling into Garmin connect

Hi, I am using Wahoo kickr trainer and do cycling training using Zwift software with all of the sensors (power, cadence, hrm) sending data to Zwift.

I have setup automatic data upload to Garmin connect, which works well as all the data is loaded to GC after Zwift work out is saved.

however there is one exception: GC does not show training effect and VO2 max cycling for Cycling workouts imported from Swift.

please advise how this can be corrected ? All other data in GC looks correct: power, cadence, hr

Thanks