In the latest version of Bentley Hevacomp (from V8i SS1 SP5 (V8i SS1 CP3 (06/16)) zone data set up in PartL 2010 is not being loaded into PartL 2013.
Bentley Hevacomp introduced PartL2010 to Design Database V26 with the SP5 update. This allows you to run PartL2010 and PartL2013 calculations from the same Design Database project without having to use the previous version of Bentley Hevacomp.
Both PartL 2013 and PartL 2010 have - by necessity - seperate data sets. Any data entered into PartL 2010 will only be transferred to PartL 2013 the very first time the PartL program is opened. Any changes after that will be ignored. Once the PartL 2013 program is opened (and potentially) PartL 2010 data transferred, the PartL 2013 and PartL 2010 data sets are considered unique and distinct.