VERY IMPORTANT: before starting to create editions and shapes for the automated page make-up, make sure that the GN4 system uses the same point size as the original system. Is it quite likely that the original system might the the "big point". Remember that the GN4, installed as new, default to the "small point".
It is recommended to use the same point size and the original system, otherwise, you will need to re-calculate manually each and every measure.