rclone automatically adds the
drive-root-folder-id of the first User to backup from Google drive to the conf file. The following users can't be backed up and rclone deletes all local files (sync).
What is your rclone version (output from rclone version)
1.50.2
Which OS you are using and how many bits (eg Windows 7, 64 bit)
Windows 10
Which cloud storage system are you using? (eg Google Drive)
Google Drive
The command you were trying to run (eg rclone copy /tmp remote:tmp)
A log from the command with the -vv flag (eg output from rclone -vv copy /tmp remote:tmp)
I haven't experienced what you have (NCW will help you fix it I'm sure if you work with him on describing the problem) - but I can note for you that you can also set this variable in the config file:
root_folder_id=XXXXXXXXXXXXX
At least that way it will always be used as standard on that remote without needing to specify it in commands.
Generally - all flags spesific to a certain remote module can be put in the config (Gdrive in this case).
General rclone flag not spesific to a certain remote (like for example --fast-list) can not (yet...).
Note that flags set in config have slightly different format to those used on the commandline. See the docs for each command if in doubt, but they all follow a common pattern.