Do new weapon upgrades replace old ones?

eddycurrents

Academy Page

Join Date: Aug 2005

Dark Angel of Rising Chaos

W/N

This has undoubtedly been asked before but I couldn't find it... if you plop a new weapon upgrade on top of an old one, does it replace the old one? I know it works this way with runes on armor.

See... I have a +1 insightful staff head. It's basically useless but I am wondering if I should drop it on my staff for now, until I get a better one. But I'm not going to put it on if it screws up my staff.

<DOH duplicate post>