[ovirt-users] update from 4.1.9 to 4.2.3 and OVN doubt

Hello, at beginning of 2017 I configured OVN in my oVirt 4.1.0 setup, with the previosulsy described notes, I think the ones here: http://www.ovirt.org/blog/2016/11/ovirt-provider-ovn/ At that time OVN was not directly integrated in oVirt setup. Then I applied the updates in minor releases and coming at 4.1.9 level in late January this year. Now I plan to update to 4.2.3. I have doubts related to OVN setup. Will the new 4.2.3 OVN setup conflict with my current 4.1.x setup? WHat do I have to answer in setup related questions and prompt? In fact now, after enabling 4.2 repo and updating the setup itself, during the procedure (that I Canceled right now) I receive these questions: # engine-setup . . . [ INFO ] Stage: Environment packages setup [ INFO ] Stage: Programs detection [ INFO ] Stage: Environment setup [ INFO ] Stage: Environment customization --== PRODUCT OPTIONS ==-- Configure ovirt-provider-ovn (Yes, No) [Yes]: . . . --== OVIRT ENGINE CONFIGURATION ==-- Perform full vacuum on the engine database engine@localhost? This operation may take a while depending on this setup health and the configuration of the db vacuum process. See https://www.postgresql.org/docs/9.0/static/sql-vacuum.html (Yes, No) [No]: Yes oVirt OVN provider user[admin@internal]: what_to_put_here oVirt OVN provider password: . . . --== CONFIGURATION PREVIEW ==-- Default SAN wipe after delete : False Firewall manager : firewalld Update Firewall : True . . . Set up ovirt-provider-ovn : True . . . Configure VMConsole Proxy : True Please confirm installation settings (OK, Cancel) [OK]: Cancel Thanks for any hint. Gianluca