CRM 2016 Upgrade Service - Case - Environments

Hello Team !

We have recently made our last push to CRM 2016 (on-premise). Our Support team has suddenly noticed that for any given Case under [General > Contract and Product Information] it has started to list ALL Active Environments. In past, it used to only show a linked Environment to the given Case.

Similarly, for each given Case under [Invoice Products] its listing all Products.

Any clues ! Kindly share.

Chee