Let’s take a closer look at your group ride and the workout you associated with it.
Your group ride
McKinley (the workout you used for association)
McKinley is a 2hr30min workout with 5x1 VO2 followed by 2hrs of Sweetspot and high-Tempo. Due to all of the continuous time in high-Tempo and Sweetspot, it is classified as an 11.3 Sweetspot workout (wowza!).
Time in Zone from McKinley
Coasting: 0 (0%)
Z1: 19min30sec (13%)
Z2: 7min30sec (5%)
Z3: 85min0sec (56.7%)
Z4: 33min (22%)
Z5: 0min (0%)
Z6: 5min (3.3%)
Z7: 0min (0%)
Time in Zone from your group ride
Coasting: 14min33sec (8.3%)
Z1: 44min22sec (25.4%)
Z2: 43min55sec (25.1%)
Z3: 18min49sec (10.8%)
Z4: 9min28sec (5.4%)
Z5: 12min35sec (7.2%)
Z6: 12min41sec (7.3%)
Z7: 18min30sec (10.6%)
Although your group ride has an IF of .83 and McKinley has an IF of .84, you can see how dramatically different the composition is between your group ride and the workout. I would not have associated your group ride with this workout as they are completely different.
The implications on your Levels thereafter are, as you pointed out, not representative of your current abilities. I’m going to have our Customer Support Team reach out to you to help reverse this association so AT can keep you on track. 
This is an example of how, try as we might, solving this problem in a manual way is too complicated for us to do ourselves (ourselves = us as humans, not TR specifically). We are hard at work on AT’s outside ride analysis and its ability to assign the appropriate credit from an outside ride. It’s a top priority and we’ve got brilliant people working on it.