Pathfinder Sheet Question

On the Classes and Level  section of the sheet there are some new added slots that seem to be throwing off the HP of my players. The Hit Die  spot is self-explanatory. I add what the hit die of the class is. Simple enough. Class HP is what is throwing off all my characters HP. Example: A druid currently has 19 HP through rolling his 1d8 3 times. When adding that 19 into the Class HP  he suddenly has 35 HP!  My question is, what the heck is this for as its completely breaking all the HP of my players. 

I had a similar issue with mine. It seems that when migrating to the new one version. HP was added to the NPC section, which is then added to the PCs health. On the NPC section, remove the NPC health, and that should get your claculations lined out.

you can click the checkbox just above the classes to 'add race/monster hd' then delete the extra hp from there.