Saved images inherit the filename denoise/sharpening values taken from the previous image

Topaz Photo AI - every time I click on save I find that although the filename is given correctly the add-on denoise and sharpen parameters are those for the previous image. I then have to correct them manually to keep a record of what was applied to the current image. This happens every time: 30 or 40 so far.
Steps to reproduce issue:

  1. Step 1
  2. Step 2
  3. Step 3

Topaz Photo AI [v1.x.x] on [Windows/Mac]