What happens if my putty session is killed while doing a rclone copy/move/sync?

[gunum_gunum]

Put Rclone copy in background

Use a termial multipexer like (assuming your host is on Linux) screen or tmux. The advantage: If your connection is lost, the command runs on and you can even reattach it in a later ssh session. See https://wiki.ubuntuusers.de/Screen/ for handling screen. Have a nice day!

http://man.openbsd.org/OpenBSD-current/man1/tmux.1