no
no, i thought 1 PP was lost if you lost any squad.
nein, if you spend pp on the unit, in order to get over the reserve and "in supply" you have to spend the pp cost again, that's all. You dont get an y negative effects from losing the unit, just have to spend it all over again, yet if you still have it and sell it, you get the pp back but lose it if you lose unit.