Have you tried Searching the forum?
http://www.2brightsparks.com/bb/viewtopic.php?f=15&t=10940&p=42339&hilit=hyper+V+vhd#p42339
You could try enabling the setting "Copy all files in [Side] from the shadow volume (snapshot)" under Modify > Expert > Copy/Delete > Advanced which may help (or trigger) VSS-aware products to 'present a matching/coherent set of files'. But please note that we cannot vouch for which method/s are required, recommended, preferred or safe.
http://www.2brightsparks.com/bb/viewtopic.php?f=15&t=10940&p=42339&hilit=hyper+V+vhd#p42339
You could try enabling the setting "Copy all files in [Side] from the shadow volume (snapshot)" under Modify > Expert > Copy/Delete > Advanced which may help (or trigger) VSS-aware products to 'present a matching/coherent set of files'. But please note that we cannot vouch for which method/s are required, recommended, preferred or safe.