Annotations in Grafana

Hello everyone,
i’m starting an activity of annotations/labeling of my data and i was wondering

  1. Where are stored Annotations in Grafana? Can i see a summary? (I’m using legacy Alerting)
  2. How do I export them?
  3. Is there a way to move/store them in e.g. InfluxDB?

If i roll the new “Alerting” will i loose something?