So I wrote a script to help manage which files and folders to exclude.
When the mover runs it will convert line endings to unix format, validate file and directory paths, then compile a complete exclusion list which is then passed to the mover.
Its progress and any errors can be viewed in Unraid's system log (Tools -> System Log).
https://gist.github.com/fritolays/da5b835080ad0a4f8a48013b7b7745d8