After upgrading to Zuora Quotes v6.5 (or later), when looking at a quote, the product details section is blank.
Starting on Zuora Quotes v6.5, Quote Charge object is replaced with Quote Rate Plan Charge for Quote Object Model Refactored purpose. For existing quotes created prior to the upgrade, if Quote Charges were used, you would no longer be able to see them.
To fix the issue, you can edit your quote's layout and replace the no-longer-working visualforce page with QuoteDetailProductSelector one.
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