Hello, the positions are usually recorded as Position Palettes, the palettes are used to enter the information into the cues being created. The Position Palettes are updated at the new venue which in turn update the cues. There isn't really a one type of offset to update all positions.
Videos are available at the links below to see how palettes work. Season 1 video 3, and season 2 video 4. www.highend.com/learnhog4
Video 6 www.youtube.com/playlist?list=PLyEROIf9mUiD5OlgRfVJy99Xt5pEAszw2
