@leocg
Hi, sorry for the late reply.
From what I read from multiple forums, it only says that I have to manually export from Opera and then import to the other browsers, but none of them gives a reason why it is so when other browsers usually work.
I find it a hassle to have to do it manually, and I apologise if my post was a little "aggressive", as I was pretty annoyed and angry at both the bugs and this import problem at that time.