Default collision naming strategy is not great

[bdezonia]

Open Boats (window named boats.gif)
Duplicate (this second window is also named boats.gif)
Noise Reduction :: (do any one of them to second window)

Notice that:
1) Name of second window changes - why?
2) Name is boats.gif-1 and the file Save As Gif defaults to boats.gif-1.gif

Either don't allow rename or rename to boats-1.gif