Why can't I see REST API revenue line updates in opportunities?

If a salesperson creates or updates a revenue line in the Opportunities UI and you also create or update the same record using a REST API, then the last record accessed is temporarily held in a storage area as cached data.

This means that the more recent REST API update to the same revenue line record isn't displayed on the Opportunities UI. To get around this issue, close and open the opportunity page after you complete your REST API revenue line record updates.