Two small gameplay questions

[Ragnarok-X]

Hey, just two small gameplay question:

I have access to an enemy ship which has SEVERAL components with a higher tech level than mine (i.e. propulsion, supply, stellar harnessing).
When i anaylze the ship, will i only get one random tech, or will it increase my knowledge in every tech level higher than mine ?

Secondly, i have cloaking armor. When i build ships and use them, i can activate the cloaking the button. Now i thought it may be nice if i could cloak my shipyards and so i retofitted all my yards with one cloaking armor (which says "prevents level 1 passive and active scans). Unfortunally my yards dont get the button to activate cloaking.
Whats the deal ?


thanks !