User blog comment:MisterWoodhouse/The first migrations to the Unified Community Platform/@comment-31617896-20201024194528/@comment-45977082-20201026130623

Unlike forums you only have a limited timeframe to edit discussions board posts. Forums gave you an unlimited timeframe, however discussions don't so if this timeframe expires and you forgot to add something to your discussion post you can't add to it, you have to make a comment in order to add to your discussion which can be annoying.