Steve, importing feature based geometry into Creo is a slow and very platform oriented development progression. Having never heard of Geomagic, it is likely very low on the list for feature based translation.
However, a good model from Geomagic should export a good STEP file. Step has been the most reliable translation format for most of my work. Only Neutral files have seen even greater compatibility.
I'm going to suggest that there are settings in Geomagic that is limiting the STEP export accuracy. This can cause some trouble for import translations.
Of course, you could contact PTC sales and see what they have or plan with regard to this.