(zipfs) Problems moving files between zip file systems

While working with the new ZipFileSystem to modify the contents of a zip file, encountered some issues.

The issue occurs when a file within a zip file is moved to a different location within the same zip and a FileVisitor is invoked by Files.walkFileTree the original (no longer existing file) will attempted to be visited by ZipFileSystemProvider and throw a NoSuchFileException.

 
Attached is a standalone java file that can reproduce the issue.

Tested this on Java 7 u9 and the issue still exists.

The code creates a zip file with 5 elements in a sub directory, writes the content to disk, prints the contents of the zip file using Files.walkFileTree, moves one file from a subfolder to the root folder, then prints the contents of the zip file using Files.walkFileTree again.