Just keep rating all your workouts and accept any adaptations the app proposes (make sure adaptive training is turned on in your account settings). Whether your ramp test was accurate or not, things will have ‘adapted’ to meet you where you are by the end of this first training block. This chart can be a great help to make sure you’re rating things roughly as the system intends. AI FTP detection will re-calibrate you in a few weeks too, so you’ll have a better sense of what your zones really are.
You can link TrainerRoad with your Strava account and it will automatically import the data from all the rides you upload there. If your outside rides don’t have power data then there’s another setting in your TR account where you can tell the system to automatically estimate the TSS from these rides (I can’t remember if it requires HR data to do this or not). This is the most efficient way to get your outside and Zwift rides into the TR system, and if you’re not already on Strava it would be worth making a free account just for this (if you don’t wish to participate in the social network aspect then just lock all your privacy settings down so everything is visible to ‘only you’).
The AI does use the data from your outside rides but, unless they’re associated with a TR outside workout, they don’t currently affect your progression levels and are unlikely to make any significant adaptations to your training plan (it definitely won’t swap your VO2 intervals for a recovery day if you go out on a group ride smashfest the day before, if that’s what you’re thinking).
Hope that helps!