UI settings saved?
 

I'm using Duxa UI now, but I wanna try another UI. Will my Duxa settings be saved if I want to go back to using Duxa later?

Nope, I believe your window arrangement is totally separate from your UI skin. If you change skins and re-arrange, you lose your original arrangement.

I think you can save the relevant text file though (it's not eqclient.ini, but I forget which file exactly it is; some .ini file with your characters name in it and probably the word "UI") and restore it afterward, if you want to restore your original arrangement.