When looking at a survey ship in Naval Org, Geo Survey Points are being multiplied by the Survey Speed game setting but Grav Survey Points are not. Confirmed by altering setting from 50% to 100% and rechecking. Unclear if this is a display bug or an actual bug. 1.9.2, game started in 1.9.0, correct decimal separator, TN start, real stars.
Edit: @Simast, do the ships have different Armors? The ship having a different armor tech plus the difference in tonnage might be enough to make it non-refit.