mixing different armor types / shield types

not sure if there's been previous posts on this, but...

i've noticed that if i mixed phased shields w/ normal shields - the phased shields don't work.

you'd imagine that there shouldn't be a problem with 2 types of shield generators since if theoretically the field is generated at a pre-determined distance then the 2 types can be set at different distances from the ship so they don't interfere...

i've noticed that if i have both regenerateive armor and normal armor, when the armor is damaged, it doesn't regenerate either...