How to fix paths when iTunes truncated path names after adding music to a folder
iTunes for Windows truncates file names to 40 characters. You'll notice that your original file name (not including directories) is 47 characters and the truncated file name is 40 characters. Why does it do it? I don't know; I wasn't able to find out.

https://discussions.apple.com/thread/3322627


  If you let iTunes "Keep the iTunes Media folder organized" it will use folder and file names with a maximum of 40 characters, inclusive of the extension characters. The following characters are replaced with an underscore.  \ / : * ? " &lt; > | and also ; (which is a valid filename character). A leading space or period is also replaced, as is a trailing period for a folder name. Trailing spaces are stripped.


The author of that post has a script that can consolidate your iTunes library while still keeping your long file names. You can find it at http://samsoft.org.uk/iTunes/scripts.asp#ConsolidateByMovingLong.