Opportunity profile: edited information in opportunity details is not saved

[Cy-fox]

Description

When editing fields in the Opportunity details section of an opportunity profile and saving, the changes are not persisted. After saving, the form reverts to the previous values.

Steps to reproduce

1. Open an opportunity profile
2. Edit one or more fields in the Opportunity details section
3. Click Save

Expected behaviour

The updated values are saved and shown after the page reloads or the section refreshes.

Actual behaviour

The edits are lost, the fields show the original values after saving.