MAI-Transcribe-2 via fast transcription: Preview or GA under the DPA, and does data stay in the region?

I run a desktop dictation app for Windows. A user holds a key and speaks, and the app sends the recording to our API. Our API sends it to Azure Speech and pastes the resulting text back into the user's application. Users can dictate anything, so the audio and text may contain personal data, sometimes sensitive.

We plan to use MAI-Transcribe-2 in production, through Azure Speech fast transcription (enhancedMode), on a resource in northeurope. So far we have only run test calls.

1. Is MAI-Transcribe-2 through this API generally available, or a Preview under the Microsoft Products and Services Data Protection Addendum? The MAI-Transcribe page no longer mentions preview, but the regions page still marks mai-transcribe-2 as preview for Voice Live.
2. If it is a Preview, does it allow Personal Data processing, so that the DPA's personal data and GDPR terms apply?
3. Does the Location of Customer Data commitment apply, so that audio and transcripts are processed only in the resource region?
4. Is audio or text stored after the request completes? The Speech to text privacy page says fast transcription keeps no data, but does not mention MAI-Transcribe.

Please point me to the document that states each answer.