If I modify the 3 EXIF dates, everythings look well in the EXIF window. But when I want to sort the thumbnails on the Exif date, the result is wrong.
So after changing this dates, I display some dates under the thumbnail and I can see that the 2 first are not the modified EXIF dates !!!. This date is still the day I took the picture and it's the date use by the sort.

Suggestion It will be nice if the number of days can be more than 2 digits. It's impossible to move easily one year at once.