squads and loadgames

is it me.. or does loading save games sometimes do strange things to unit stats?

take for example a squad of 4 men. let's say half wounded and showing only 2 men. save game... has anyone seen them reduced to a 2 men squad with full health upon loading game?

how does hp work in a squad anyway? if you lose half or whatever the hp, can you heal it back to max hp of the 4 men if you rest in a city? or is it lose enough % and you lose a member of the squad permanently?

the unit was a custom designed one.. assuming it makes any difference. game saved/loaded in same version