Worked on stabilizing the iTwin/imodel-transformer repository by addressing cache consistency issues in the iModelTransformer backend. Focused on backend development using TypeScript and JavaScript, the work involved removing the _hasElementChangedCache mechanism and instead relying on exporter.sourceDbChanges to provide a single, authoritative source for element updates. This approach reduced the risk of stale state and simplified ongoing maintenance. Additionally, trace logging was introduced for skipped elements, enhancing observability and debuggability of the transformation process. The refactoring of hasElementChanged() improved traceability and made the codebase more robust, with all changes centered on improving reliability rather than adding new features.