Installing Pro DC and DC Reader - Make Reader default Viewer for all users

VMWare Horizon Environment - Cloned Desktops created from Golden Image.

Adobe DC Pro and Reader installed in to the Image.

Adobe DC Pro installed for named users but not run using this:

1. Log in to master image.
2. (Optional) Customize the installer with the Customization Wizard.
3. Install Acrobat on the master image with the following command:

Setup.exe  /sALL/msiROAMIDENTITY=1ROAMLICENSING=

5. hut down the master image.
6. Take a snapshot of the master image.
7. Update all VM desktops using the captured snapshot.

Problem - PDF Viewer defaults changed to PRO for all users. What do I need to change when creating to keep users default to Adobe Reader? (or whatever PDF viewer the user currently has). Using PRO is an issue as only 20 of our 300 users actually have a named user license available to use.