Double activities when using Zwift and "Bike Indoor" activity

I have set up zwift to sync to Strava and Garmin after each ride, which is working fine... But now after the latest firmware update, I want to also use the watch to update my Vo2 max and other metrics. The problem is that I get double activities on Strava and Garmin. The question is: Should I just press discard on the when the activity is finished? Will the activity still update my Vo2 max and other metrics?