Originally Posted by theducks
I believe that is a Windows default action.
There may be a way to have a 'Default Save As folder' preference.
I don't want a default "Save As" folder that I always have to navigate from. I have ebooks sorted into author folders, and I want them to start in "the folder where this file is currently located," and I don't think there's a default setting for that.
It's possible it's using either the last save-as location or the last "open" location. I tend to open epubs by double-clicking on them rather than opening Sigil and then navigating to the folder, and that may be throwing things off.