ChannelCount & Channels are not working propertly in PSD multichannel images

[ColorInLab]

Hi.

The ChannelCount is always returning 4 for PSD images in multichannel format with more tan 4 channels.

Splitting the channels into separate files is working for RGB & CMYK, but not for multichannel files, because only the first 4 Channels are detected.

Alex-Crop-MC7_Small.psd.zip

[dlemstra]

ImageMagick currently ignores the extra channels. Thanks for sharing that image because that could help us with adding support for reading extra channels. I have no idea when I will be able to work on that though.