Is there an answer to this question yet David?
Please create a service request for your requirement. You can use the following link:
https://connect.bentley.com/
or
https://apps.bentley.com/srmanager/ProductSupport
This refers to Service Request 7000733419, submitted on behalf of ElectraNet. Description: match ver' MicroStation 08.11.09.829 Product: Bentley Descartes for MicroStation Product Area: General
Please use the link below to download Bentley Descartes for MicroStation as requested:
https://bentley.sharefile.com/d-s29234540dd0470b8