What do you mean by "This will either succeed or it will be refused"?
When the comments say that something is refused then this means that
directories in NTFS are balanced trees and there are a lot of cases to
support however not all of them are implemented yet. Refusal to do an
operation does not mean that the volume will be corrupted! Actually it
means just the opposite: it's a guarantee that your data is always
safe (If you have any problems then please tell us and we'll fix
ntfsmount so it will not ever happen again.)