CAM in Strong SRT 4910

[Hunk2012]

I have a strong srt 4910 Middle east version with 2 CAM slots. I've tested parabole Maurice 16 deg E succesfully in ASTON viaccess CAM. But when I tested Canalsat Reunion SECA card in ASTON SECA cam, I have only video on most channels but no audio. On 3 channels I get audio but no video .Pushing the info button tells me the channels have 2 encryptions SECA, Nagra. I'm thinking may be video is SECA and audio Nagra. Is that possible?