Salesforce Certified Data Architecture Practice Test

The recommended approach to re-run data migration tests in a full copy sandbox is to refresh the full copy sandbox and then re-run the data migration test. This process ensures that you begin with a clean slate, making sure that the testing environment is up-to-date and accurately reflects the production environment. Refreshing the sandbox allows you to bring in the latest configurations, data models, and relationships that may have been altered since the last migration test, helping to ensure that your tests are valid and reflective of the current state of your organization.

Starting anew with a refreshed sandbox also helps to avoid any potential issues that could arise from residual data or configurations that were part of previous test runs, ensuring that you are testing under optimal conditions. This method is generally favored when performing extensive data migrations since it reduces the chances of encountering unexpected data integrity issues or orphaned records, leading to a more reliable and informative testing process.