While trying to create optimal montage with the help of AtlasViewer we do the following: 

Import  montage data file that was recorded in Nirx to the AtlasViewer, then I register atlas to dig points, register probe to surface, project probe to cortex, Curr subject channels. 

After these actions I get the brain areas and the corresponding optodes. The problem is that the areas displayed are non symmetric, although the montage is.

 For example:

The channels in the first and second row are symmetric in the montage but mixed up in the AtlasViewer. We could not figure out why and  would like to solve the problem in order to create the optimal montage for our purposes.

Thank you.