Do you mean connecting ARBITRARY_ROOF_PCLOUD to the final building process?
If yes, then @Spaceballone81 wrote that he didn’t have to do any of that.
If not, what exactly do you mean under “problem with PBC export”?
One more thing: did you also had to place freeway_export.py to folder for python 3 and edit it to get Freeway GEOs and PBCs?