adobe.document.graphics.server

Subject: wrong colorspace in PDF

When I process a CMYK pdf file with the following commands:

I get in the output file (saved_info.xml):

Thus AGS thinks it's RGB !!!!!
I checked with ImageMagick on the same file, I get the following output form "identify -verbose HQ7782[4].pdf.:

c:>identify -verbose "HQ7782[4].pdf"
Image: HQ7782[4].pdf
Format: PDF (Portable Document Format)
Class: DirectClass
Geometry: 2590x1206
Type: ColorSeparation
Endianess: Undefined
Colorspace: CMYK
Channel depth:
Cyan: 8-bits
Magenta: 8-bits
Yellow: 8-bits
Black: 8-bits
Channel statistics:
Cyan:
Min: 0 (0)
Max: 255 (1)
Mean: 131.223 (0.514602)
Standard deviation: 110.339 (0.432702)
Magenta:
Min: 0 (0)
Max: 255 (1)
Mean: 83.2481 (0.326463)
Standard deviation: 83.403 (0.327071)
Yellow:
Min: 0 (0)
Max: 255 (1)
Mean: 8.09719 (0.0317537)
Standard deviation: 24.9622 (0.0978911)
Black:
Min: 0 (0)
Max: 255 (1)
Mean: 69.8363 (0.273868)
Standard deviation: 88.346 (0.346455)
Total ink density: 360%
Colors: 114148
Rendering intent: Undefined
Resolution: 28.35x28.35
Units: Undefined
Filesize: 1e+001mb
Interlace: None
Background color: white
Border color: #DFDFDFDFDFDF
Matte color: grey74
Page geometry: 2590x1206+0+0
Dispose: Undefined
Iterations: 0
Compression: Undefined
Orientation: Undefined
Signature: 92d40cb6064354a14899a5cbfb2621ebaabed47c4adec4ccc537bde93802fcdd
Tainted: False
User time: 0.516u
Elapsed time: 0:01
Pixels per second: 6mb
Version: ImageMagick 6.2.6 02/01/06 Q16

So, IM and AGS do not agree on the colorspace. Is this a known problem?
Can I modify the AGS commands to correct this? How?

Kind regards,
Dick

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