Disable printer redirection in RemoteApp but not for the full desktop session

We are implementing a new Windows 2012 R2 RDS server.  We allow full desktop sessions from outside the network and we're also running a single RemoteApp for local users.  The RemoteApp isn't playing well with redirected printers so I would like to disable them for the RemoteApp but not the full desktop session.  Most all of the users use both the RemoteApp while in the office and the full desktop session when they're outside or I would disable it per user.

Thanks for any and all suggestions.