Of course. I'm using recursion to move through and create subdirectories if necessary, and then running the sync directories function on those subdirectories. The main point was there become problems if there is a subdirectory that shares the name of a file in another directory. As this will cause issues with trying to sync either the file, as it can't be moved over to the directory containing the same name subdirectory. And obviously it will cause issues with trying to sync directories, as the file can't be treated as a directory, and its parent directory can't create a subdirectory with the same name. Another important clarification is whether the file contents are looked at. If two files have the same contents, but different modification times, will the most recent one still overwrite the older one.