qimage embedded my canon pixma pro 9000 MK II profile
I think that is your problem. If you images originally had Adobe RGB embedded and you left the Canon printer profile in place in Job Properties, then the image would be converted and that profile would end up being embedded in the image.
The print to File dialogue has 2 options: printer profile or sRGB. For a lab, the printer profile specified and or supplied by the lab should be used in Job properties. If you want the image to end up with Adobe RGB, the put Adobe RGB as the printer profile in the Job Properties. If that sounds strange, remember Print to File is "printing".
See Help, learn by example 25a.
Having said all that, if the lab is happy with an image in Adobe RGB and has that embedded, then why use Print to File?
Terry