We have a problem with the imports.
There are doubled images. We know this. But the images that are imported with the "universal" ID code is being deleted in favour of an image with the "newer" ID code.
Look at
>>6762939 . This image is the same as >>3180311 , but the newer version was kept instead of the older version.
This will cause problems when trying to track down images from one site to another.
In cases of a double-uploaded image, the one with the smaller ID number should be kept instead of the newer one. One of the big strengths specifically of PonerPics is keeping the image IDs the same.