A data model update can alter joins, default filters, calculated fields, or relationship direction. Reports may still render normally while counts shift or some records disappear.
Compare the old and new model definitions, changed relationships, calculation logic, filter defaults, and report refresh time. Trace a few known records from source to visual and identify which transformation changed their inclusion.
Version important models, document semantic changes, and validate representative reports before promotion. Communicate expected historical shifts and retain a way to compare old and new definitions during review.
Informatix Systems provides data engineering and analytics services. We can assess the affected environment, trace the problem through its dependencies, and help plan a practical improvement. Contact us with the system involved, when the issue began, and non-sensitive error details.