Imported PDF file raster images are mirrored

Questions
1

I know that this is a typical incoherence that exists between raster and non raster coordinate systems.

But is there a specific reason for this to be revealed on the following example?

im = Import["ExampleData/rose.gif"]

2016-01-10_16-01-15.bmp (109 KB)

Export["test.pdf", im];

Import["test.pdf", "Pages"]

2016-01-10_16-03-09.bmp (63.3 KB)

Import["test.pdf", "Images"]

2016-01-10_16-03-09sdfsd.bmp (63.3 KB)

As you can see, when importing the “Pages”, the image is correctly imported (inside a Graphics object). When importing the “Images” element, the image gets flipped.

Any particular reason? Can this be improved for future releases?

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