After upgrading vCenter this functionality is no longer enabled by default. Please perform the following steps to enable rename of files upon successful Storage vMotion.

1. Log into the vSphere Client as an Administrator
2. Click Administration > vCenter Server Settings
3. Click Advanced Settings
4. Add this advanced parameter key:

• provisioning.relocate.enableRename

5. Set the value to: true
6. Click Add
7. Click OK
8. Restart the VMware VirtualCenter Server service for the changes to take effect