Before proceeding with a real case test, one comment about the selection of channels on the Capture Settings pane. The colour of the selected channels is hard to read.
Why not using the same interface from the Export Raw Data pane? The only minor improvement would be to put the numbers of the unselected channels in gray, as in the previous pane. So combining the best ideas from both panes would be really great, and would ensure consistency across the app.
Generally speaking, I am not a big fan of night mode with dark colours. For example, the colour for channel 0 is black: how to render black on black?