Is data migration for flexibleSyncConfiguration still not available?

Hello,

I’m building an iOS app and I’m using flexSync. I’m trying to add a new attribute to one of my models. After attempting to change the schema I got this error:

Info: Connection[1]: Session[1]: Received: ERROR "Client provided invalid schema version: client presented non-zero schema version "1" while schema versioning is not enabled. set the schema version to 0 to continue syncing. schema versioning is an upcoming device sync feature" (error_code=235, is_fatal=true, error_action=ApplicationBug)

So is schema versioning for flex sync not ready? Or do I need to enable it somewhere?

And if it’s not ready how can I get around this? My app is on testflight so I would prefer if I didn’t tell users to delete the app and redownload it.