Another (less important) item of curiosity: Are people who upvoted before the move (for 1 point) permitted to upvote again (for 10 points)? Can they back-out their 1 point upvotes, generating a -9 point no-op and then continue to downvote for an additional -10.

Funny, I was wondering the exact same thing. Likewise, if you publish to main LW first and move to discussion, what effect does that have on the point totals?