Republish is a funtion that those of you familiar with blogger sure know about it.
I went through a database copy/restore operation. after that some of my posts had some "?" in them (instead of some non-English characters). The interesting thing is that after opening the post for editing and saving it (with or without changes) the missing characters dissapeared and everything was fine.
As you can see, I there was something like "republish" (a function which saved all posts again) that would be fixed immediately. Otherwise, there's 400+ posts and nearly 4000 comments to edit and save!!