There is NO way you can export the bookmarks from Avast SafeZone browser and transfer them to another browser and whoever says the opposite is either lying or is ignorant. The only way to do that is to manually copy paste their links. Case closed and truth restored. (that is true at least until 17/01/2017 00:53 UTC+1)
P.S. Don’t even bother answering me: 1) I won’t see it and 2) Even if I saw it I would expose your incompetence.