If you were not specifying any style, then you shouldn't need to make any changes at all, since the first style defined is always the default. The difference between the two was how port labels were handled on GDS read, because magic was dealing with the layer:purpose pairs on text differently than appears to be expected in the GDS, something that I need to spend some time to investigate and figure out. But if the default GDS input style was working for you, then that's fine. I guess you were using the "readspice" script to correct the input for ports, which would make the input style selection unnecessary.