I am playing Zelda Skyward Sword and I am at a point where I could do some upgrading - but yet to do any at all.
I am wondering if any upgrades I commit to will remain for the duration of the game?
For example, if I upgrade the wooden shield and the upgraded version breaks, will I have to upgrade it again next time a buy I new one? or can I buy the upgraded version instead?
If they do need re-upgrading each time, what other items work this way?