Introduction
You may wish to create your migrated form as a Canvas Power App connected to one or more Dataverse tables. Note that this will require a Power Apps premium license, as Dataverse is a premium connector in the Power Platform.
Create a Dataverse connection
If you have not previously used the Form Migrator to connect to Dataverse tables, you'll need to create a new connection in the appropriate environment in your tenant. Click on the … next to the Power Apps Connection dropdown, and then log in with credentials that have permission to create new tables in the appropriate Dataverse environment.

The app will request permission to the PowerApps Service API, which must be granted, either just for yourself, or on behalf of your organization. If your account does not have the ability to grant permissions, you will instead see a dialog to request approval from your administrator. This must be done before you can create the Dataverse connection.

Specifically, this is requesting the following Delegated permissions: Power Apps Service > user, Microsoft Graph > profile, and Microsoft Graph > offline_access
After logging in, you should be able to select the appropriate Power Platform environment, and click Create.

Power Apps settings
After selecting the Power Apps Connection, select Dataverse (as opposed to SharePoint) as the Entity Type. The default Entity Prefix will be kudzu_, but you can change this to whatever you like. The primary Dataverse table name that will be created will then be YourPrefix_YourFormName.

Click Go. A dialog will request permission to access the Common Data Service (Dataverse database).

Specifically, this is requesting the following additional permission: Dataverse > user_impersonation
After you click Accept, the Dataverse table/s and form/s will be created.

Import the Power App
After the Write process has completed, a dialog will show you the next steps to finish the conversion.

Click Copy to copy the URL of the resulting msapp file. Go to the Power Apps Maker (make.powerapps.com), and Import this app file. Paste the copied URL into the Windows Explorer browser bar, and select the .msapp file.

Your app will open in the Power Apps designer, where you can make any modifications you wish, and then save and publish the app. When you Run the Power App, it will be connected to your new Dataverse table.