Refactoring old TOSCA test cases starts with reviewing existing test flows and identifying redundant or hard-coded steps. Break large, complex test cases into smaller, reusable modules using TestStepBlocks. Replace outdated modules with updated standard modules to improve stability and maintenance. Apply clear naming conventions and organize test cases by business functionality. Remove unnecessary waits and optimize synchronization settings for better execution performance. It’s also important to validate refactored tests against current application behavior and update test data where needed. Learning these best practices in a structured way is often covered in a TOSCA Certification Course, which helps teams maintain scalable and future-ready automation suites.