Please confirm this will work with K2 Five 5.6.
https://community.nintex.com/t5/K2-Five-blackpearl/Process-Version-Migration-Utility-v3-0-6/ta-p/176994
https://community.nintex.com/t5/K2-Five-blackpearl/Process-Version-Migration-Utility/ta-p/175930
I can remember that there used to be problems with a workflow containing sub-workflows. this must therefore also work with sub workflows