@Jan-Peter_Koopmann, I had this same issue. I am downloading the encrypted folders (using odrive) to a Google Cloud instance and then will rclone them plain to a folder on GDrive. I will then use rclone to mount that encrypted folder on my computer once again (using the same credentials from rclone.conf).
I’ve tested with a small folder and worked very well. See here for further discussions: Recommendations for ACD->GSuite/Other transfers