Currently all the deployments gets superseded irrespective of product rule configured in the pipeline.
Quick workaround I can recommend is to have different pipelines for different products.
But I will take back your feedback on this to the team for further discussion. And if you tell us your use case for modifying different product rule in a single pipeline will help us to understand more.
@ChinmayaHegde We need approvals to create a new pipeline in PDM PROD environment and might take days due to the process. For this scenario, we edit existing pipeline and give a different product.