Board Thread:General Wiki Discussion/@comment-2240864-20180814202900/@comment-26444017-20180817080025

My guess would be:

1) Not for most of them. Anything that was posted specifically to this wiki should already have the appropriate lisence. If there is a story that you posted here from elsewhere, you may want to check on that.

2)Probably, you just need to make sure that they both fall under CC-BY-SA, or at the very least the copy posted here.

Again, these are just my guesses, but I think that's how it works.