uninstall VPN Client silent and install the new Sophos connect

You can download the config in UTM. So yes you can do this. 

How please? We have 100 Users. I am not sure if I can deploy it for 100 Users because the opvn File for each user are different

Again: You need SFOS for doing the single file deployment (.pro).

You can download each single file per user from UTM (ovpn) but you need to deploy it per user. If your tool cannot do it per user, you cannot deploy it. 

Hi,

I can copy my file there, but it delete it automatically

copy /Y "c:\!vpn\*.ovpn" "C:\Program Files (x86)\Sophos\Connect\import"

I can copy it to for example d:\test

It shows me, a file copied

Any Idea?