Omkar Zade worked on the SciCatProject repositories, focusing on restoring reliable dataset history interpretation across API versions. He implemented a backward-compatible history format for v3 datasets in the backend using Node.js, NestJS, and MongoDB, introducing adapters and a generic pipeline to bridge legacy and new data models. A migration script enabled seamless data lineage transitions, while frontend updates in Angular re-enabled the dataset history view and addressed type safety issues. By updating tests and type definitions, Omkar improved coverage and reliability, ensuring that older integrations remained functional and that history data remained accessible and consistent across evolving API versions.