Well, i'm already upgraded osTicket 1.9.5.1 to 1.9.9 and after upload all files to server (and overwrite it all).When I reload osTicket page i can't see Upgrade page...When i'm manualy reload Upgrade page i see this:"Nothing to do! System already upgraded to v1.9.9-1-gbe2f138 with no pending patches to apply."That's correct? There is nothing to apply in SQL? Upgrade from 1.9.5.1 to 1.9.9 has no change in SQL?