Only show channels in selected group under channels

[JCDinPGH]

When looking at channels and choosing advanced tools-channel groups and I choose a specific group, could only those channels for that group that are checked show instead of a mix of checked and unchecked channels? Otherwise a group with a lot of channels requires a lot of scrolling to find the check marked channels to remove unwanted ones. When there are over 20000 channels finding ones specific to a group can be time consuming.