rclone copy/sync/move file, then submit purge request
or rclone sync/copy/move a lot of files, use a log file
process the log file to get list of files copied and submit multiple purge requests.
or run rclone check source dest and save output to file.
create list of files that need to be copied, files.lst
run rclone sync source dest --files-from=files.lst
purge files in files.lst