One server is in our domain, the other in our DMZ (for customers)
We want to distribute our application from our domain to our DMZ server, but we don't want our customers to authenticate in our domain.
The only other possibility that i can think of is do a reload of the application in our domain, copy the file to the DMZ (by batch file) and restart the QV service so that the application is out of the memory.
But when we do that, the customers who are connected at that time, lose the're connection
You should be able to do this. You will have to setup a DSC pointing to the other machine and have either a share to distribute the document to or add the QVS to the QMC. The secret to this is you will have to setup a local user with the same name and password as the service account that is running the QVs services on the server in the dmz.