Since neoCatalog version 3.13, Design Info could happen to show more channels than those contained in the picture as actual channels.
If the design has transparency, this is counted as an additional channel, although without the chance to edit it.
Let's assume a hybrid RGB design with a spot color channel and a single layer with transparency:
When imported in neoCatalog it would show only the spot color channel as the one that could be edited for a new colorway, whereas the total number of channels on Design Info would be 5. This channel number mismatch has no effects at all.