Expand-DedupFile and Measure-DedupFileMetaData not cooperating.

I deduplicated a volume with the setting "files 0 days or older".  I let this run for a week and got all the results I expected.

I then discovered that Commvault Simpana 10 is not able to archive/stub MS deduplicated files.

I excluded the directory I needed to through the Deduplication Settings.  I knew this didn't reverse the deduplication of current files, only future files.

Finally I ran "Get-ChildItem PATH -Recurse -Attributes !D | Expand-DedupFile" to recurse through all files in that directory to re-hydrate them.  

Once that process was complete I ran the Measure-DedupFileMetaData -Path PATH to get the deduplication status of the folder.  I get the results below:

Path                    : {PATH}
Volume                  : X:
FilesCount              : 181496
OptimizedFilesCount     : 19600
Size                    : 144.52 GB
SizeOnDisk              : 120.75 GB
DedupSize               : 16.75 GB
DedupChunkCount         : 312015
DedupDistinctSize       : 16.19 GB
DedupDistinctChunkCount : 300024

This would indicate to me that I'm still deduplicated one some files to the tune of about 16.75 GB.  The only thing I can think of is that my users like long folder paths which may be causing the powershell command to fail to execute on certain files. I'm working on that list currently, but does anyone else have any thoughts on what I might be able to do to get this looking correct?  The Size and SizeOnDisk should be much closer in size then off by 24.5GB.  

I've run a garbagecollection -full job over the weekend and the results are still the same.