Alignment Conversion - Geopak to InRoads

What is the best way to convert alignments back and forth between Geopak and InRoads?  I am working with alignments that include spirals and have not had success automating the process.  The best way that I have found currently is to convert using graphics but I have had to manually adjust the spirals each time after conversion.  Is there a better way?

I have done some searching and read about an InRoads add in for Geopak translation but I do not seem to have that add in available.