Very often when files are copied from an ingest drive or NFS location or similar they end up on the NAS with garbled names.  This is called "mangled names in samba" and caused by illegal characters for SMB to display.  These characters are not illegal obviously on the source file system but once they hit the NAS the NAS can't display them.  Here is an example and you have to find the offending character via an NFS mount and correct it or rename it and get them fixed.  Scripting a find and replace could also be helpful. 


In this example the folders should be the cities in Canada but someone has typed a trailing space and causes SMB to mangle the names:


For file and folder names in Samba, the following characters are going to cause issues:

/ (forward slash)
\ (backslash)
: (colon)
* (asterisk)
? (question mark)
" (double quote)
< (less than)
(greater than)
| (pipe)
trailing space