Another strange thwart in Strawberry's PP.

I got the idea to do cpanm --uninstall pp then replace the pp.ico in the path...

C:\Strawberry\cpan\build\PAR-Packer-1.037-1\myldr\winres

...so I could then rebuild PP with dmake

But every single time when I delete pp.ico then copy in foo.ico and rename the latter as pp.ico on hitting return it changes itself back to the camel icon. At least as seen in the file browser. I drag it outside of the directory winres and onto the Desktop and it goes back to what I made. I put it back into winres and it's a camel again. I open it from inside of winres with GIMP and see the icon I made. I use any other image viewer and see the icon I made. But in the file browser, always it is a camel regardless. And any *.exe which I make even with a PP rebuilt using dmake still comes out with the camel showing. How is that even possible?