I have facing that issue to change the Dataverse(legacy) connection to Dataverse connection.
I Have read the related content form the this poral and try to migrate the connection but it will not migrated properly it will not migrated.
I have also enabled the Display name for the column property.
If I create the new app so that are by default use the dataverse new connection.
but I have created app from the template so in the template have the legacy connection .
also the legacy connection are deprecated so I have to change the legacy to the new dataverse connection.
legacy connection are not provide the advanced option in the power apps.
please guide me with this issue.