We recently moved all our fileshares to a EMC VNXe 3200 san. One of the functionalities of this san is deduplication. Unfortunatly i had forgotten about this feature and my boss noticed that there are blue compressed files. So I ran a script to uncompress these files. The issue we are having is by changing the compression it changes the date modified to 8/27/2015. Some of our files are 10 years old and we use the date modified to filter through our file shares. So I restored a backup to an external drive before the changes were made but need a script or utility to filter out files with date modified of 8/27/15 and compare sizes with old backup and replace current with old backup if the size is the same. Does anyone have any suggestions on how this can be done?