I am about to move some very large folders from one directory to
another. These files were created by Windows and have always been moved
by Windows. In essence, I am going to move them from one samba share to
another but it is merely moving them from one subdirectory to another
within the same mount.

I am gunshy on this because I know that I once lost some files by moving
them with Linux cp (it may have been 'mv' but I think it was 'cp')
because they were Macintosh files and they had some characters in the
file names that would not normally be permitted. I don't want that to
happen this time and I really can't afford to go there and move them
with a Windows machine (would take a long time).

If I use the command such as:

mv DGN ../files-no-backup/ -R -p

is it at all possible that these files may be lost because of a
character within the file name that is legal on Windows isn't legal on
Linux and thus, isn't copied? Is that just a Macintosh gotcha?

Craig