The improved version of the script focuses on enhancing readability, maintainability, and safety. First, the script was reformatted with consistent indentation and clear section comments to make it easier to follow and understand. Descriptive print statements were added to highlight each major step of the process. The dynamic SQL construction was improved using QUOTENAME() to safely handle table and column names, reducing the risk of SQL injection or syntax errors due to invalid identifiers. The use of common table expressions (CTEs) was preserved, but clarified with proper aliasing and better naming conventions. The logic to generate and execute the dynamic SQL for identifying key mismatches was consolidated and simplified, using UNION ALL for clarity and performance. Furthermore, the manual update section was commented and provided as an optional, controlled block with an example, allowing administrators to adjust specific NEXTKEY values safely. Lastly, by default, the transaction is rolled back to ensure no unintended changes are made during testing, with a clear note to only commit after validation. These changes make the script more robust, user-friendly, and production-ready.