Yes – but only if your migration will be completed within 30 days. If you choose this option you will still need to inform the Nintex Contracts Team once your migration is complete so they can send the non-expiring license keys for your new environment and switch your support contract to the upgraded version.
Please note: If you are running Workflow Workgroup Edition or Standard Edition a trial key will offer additional functionality that you will not see in your purchased Edition of the product.