unable to update/modify information template values on PO

Summary:

unable to update/modify information template values on PO

Content (please ensure you mask any confidential information):

I'm currently working on a client requirement of capturing additional information on PR for specific categories of items that are on BPA. For this requirement, we have explored the option of using Information templates functionality, but facing the below challenges when a PR with information templates is approved and converted to PO. How can we overcome these challenges or is there any other workaround.

1. Unable to update information template value in an existing purchase order – the information template data appears as an attachment and unable to update it