1. This is something I see shilled for a software title that is spammed so I will not name that software. (It's bad stuff and spammed.)

2. As to ensure, How about Roadkil's Unstoppable Copier? It has an abundance of options to verify and more.

3. NEVER MOVE. Be a rock. I'm not kidding. There are pleas for help recovering files from a failed MOVE. If you don't have backups, that should be addressed first. If you elect not to backup, YOUR CHOICE but beware no one will feel too sorry for your loss.

That out of the way, you can use a fine copy tool like Roadkil and once the files are safe in their new location, Delete the copy you don't want.