I installed AIMS 2017 on our test server. To get Georest extension running again the following steps were required:
(1) change path for virtual folder "rest" to ..Autodesk\Autodesk Infrastructure Web Server Extension 2017\www\GeoREST\bin
(2) re-create Wildcard Module Mapping for GeoRest_ISAPI.dll
(3) copy all GeoRest configuration files from old installation into ..Autodesk Infrastructure Web Server Extension 2017\www\GeoREST\conf
(4) change Port number in conf files (old port number: 2801, new port number: 2811)
Restart IIS, test, done.