So, basically this, but less and worse.

I mean, even filenames bear marks of ACTUALLY BEING DOWNLOADED FROM THAT OLDER GALLERY - NAMELY A COUNTER ADDED TO THE BEGINNING OF FILENAME UPON MASS DOWNLOADING, INDICATING IMAGE NUMBER IN GALLERY YOU GRABBED IT FROM.

Got it.

Your salvation, OP, is that you managed - by direct Divine intervention while you wasn't looking, most probably - to actually include two or three pictures absent in the older heap of images.

New day, new disappointments. Oh, well...

Base +32, Moon abyss +5, Chainjailhunter +6