Comment 11 for bug 1872504

The fix is quite offtopic, but for this special case it should be a solution: the date of the pictures should be also preserved in the EXIF-Data. You can read the exif-data of the files and set the timestamp from this data.
I used another tool under windows for this so far, but exiftool should do the job:

Excerpt from the help-message:

exiftool "-FileModifyDate<DateTimeOriginal" dir
         Use the original date from the meta information to set the same
         file's filesystem modification date for all images in a directory.
         (Note that "-TagsFromFile @" is assumed if no other -TagsFromFile
         is specified when redirecting information as in this example.)

Hope that works,

Sebastian