Schedule the Migration
You can initiate migration of your extensions to the Sandbox framework by submitting the request from the banner message on the Semantic Model Extensions page when you click User Extensions.
Set up the migration to happen automatically by scheduling it from the banner
message. Ensure that you schedule the migration during a low usage period to avoid
reporting outages.
Note
You can't use the semantic model extensions capability during the migration process.
You can't use the semantic model extensions capability during the migration process.