Your problem will probably be the 100 level limit for directories, everything below that will be ignored by DP (see Product Anouncement Guide)
You could try mounting deeper parts of the FS to a shorter mountpoint-name to work around that limit, but don't see this being very efficient.
My best suggestion is to do the copy on the Storage-Layer if possible (f.E. direct copy EVA -> EVA) or use things like Robocopy with multiple instancs to mirror it over.