Bulk migrating Gen1 → Gen2 Dataflows — is the Save As bulk migration API live yet? Any advice?

Hi all, I'm about to migrate all our Dataflow Gen1 to Gen2 across the organisation. I saw Microsoft announced a Save As API for automated bulk migration (multi-workspace rollouts). Is that generally available yet, or still preview? I'd rather not do them one by one. I'd really appreciate advice from anyone who has done a bulk migration: Which method did you use — Save As, export template (.pqt), or the API? What broke or didn't carry over (refresh schedules, destinations, incremental refresh, permissions)? How did you handle re-pointing downstream semantic models, since migration creates a new