If you made a new character to see the signpost/plot, then you can still reset to have it move. Since this is a villager you asked to move in, there is no danger of him not moving in if you reset, so resetting will only (possibly) move the plot. But again, this is if you made a new character to check, which I assume you did since you're aware of the reset trick in the first place; otherwise, the plot is already set to be where it is. x.x