We recently upgraded a site from Google Analytics classic to Universal Analytics.
In classic the Product Performance report had a dimension for "Product Category" in Universal the Product Performance report has a dimension of "Product Category(enhanced eCommerce)".
Selecting Product Category (enhanced eCommerce) for a period of time before the migration returns no data however we know that this data was available and used regularly before.
All the articles and documentation I have read has stated that there would be no data loss when migrating.
Is there a way to view the old Product category dimension post migration to UA?