Now it is not possible to transfer multiple workshared files from Revit Server to Autodesk BIM Collaborate Pro.
Now it is possible to get one work shared file from Revit Server and initiate manually on Autodesk BIM Collaborate Pro.
If a customer has multiple files on RevitServer it is useful to do this in bulk.
With the following code it seems possible for Autodesk to develop this feature: https://github.com/JohnOnSoftware/forge-rcw.file.migration-revit.addon