Why doesn’t workouts follow your account

I haven’t used my account this summer and my wife happens to delete the Zwift app. Now when I log on all my custom workouts are gone?!
Why doesn’t they just follow our account to any advice you log on to with your login?!

Now I have to spend about 3h to build all my workouts again!

That feature just go added to Zwift, but in your case it doesn’t resolve your current issue.