The migration license provides 60-day access for you to migrate all your data from one system to another. It includes all of the available connections. Great uses of the migration license are customers moving from a legacy ERP system to Microsoft Dynamics 365 for Financials or migrating from Dynamics CRM to Saleforce.com. If you need more time to complete your migration project you can extend the migration period or upgrade to a higher subscription level. To do this simply go to My Account, select Subscription, and in the Subscription Details, select your new subscription level.