Bentley Web Services Gateway upgrade

We would like to use ProjectWise Edge, why we have to upgrade the Bentley Web Services Gateway.

Is it possible to only upgrade the Bentley Web Services Gateway?

 

We are running:

ProjectWise Web Server 08.11.11.833

ProjectWise Explorer 08.11.11.590

Bentley Web Services Gateway 01.02.01.31

ProjectWise Prerequisites 10.00.01.56

ProjectWise Gateway Service 10.00.01.56

 

Thanks,

Tine