You aren't doing anything wrong, just have to find the routine that will suit your need.

Two ways:
1)  Use the lower dot in the dialogue box in the Print to File choice box. Then select your location and it will come back to it every time.

2) Use the upper dot which will default to a sub folder called Q and you can RENAME it.

I like number one solution best.
See screen snaps

Fred

You know what? The more I play with that thing, the more I think that check box is not working; the one that says remember output folder.
if that worked, we could have 1) and 2) together.

Fred

The problem here is that the top option (allow auto naming) doesn't support that "remember folder" option.  When you choose auto naming (top dot), you are letting QU pick both the folder and file names and it defaults to the current folder (where thumbs are being displayed).  So technically, the problem is that the remember checkbox belongs under the bottom (user naming) option because it doesn't apply to the top.  I'm going to make a couple changes there so it works more logically in the next version.

Mike