Follow your Migration Project Plan for the steps you defined to remediate gaps, deprecated features, and any other required application changes. Additional issues may be uncovered during this phase, so thoroughly test your application in accordance with your testing strategy.  Continuously update the testing strategy with new test cases, as needed.  Follow the testing strategy in each assessment phase for steps on remediating gaps and addressing deprecate features and functionality, as needed.

If you identify types of issues that require remediation that are not currently included in the tools and documentation provided by Pega, provide information about them to the Pega Modernization COE.  The Modernization COE can then assess including information about those issues when updating the tools and documentation.