CANNOT EXPORT PROFILE IN .XML

[geoformatic]

Hello to everybody!!

I use civil 3d 2012, i have create an alignment and a profile (allready designed) of a deviation road. My aim is to export both of them in .xml in order to use for stake out in construction with gps(Magellan,carlson software,road) and Leica total station TCS1100. After exporting the xml file I convert with carlson where the alignment is ok but for the profile converts only the vertical alignment,i mean it makes only the PVI's without the curves.As for total station where i need to import the xml in LGO tools for create the Aln and the Prf files it appears only the alignment without the profile.I seems that the problem starts in the exporting from civil 3d.Any help???