RGB Composition - alignment option

In the tutorial on RGB Composition there is a remark at the end about aligning the LRGB stacked images, either it can be done with the align option or by creating a sequence and executing registration. I have tried this but have difficulty in determining which of the resulting registered images refers to which channel. The luminace is usually obvious because of the detail but not so for RGB

Is there any special order in which the files are loaded in the sequence that can help me identify them?

Thanks in advance

Hi Alan, I agree that it’s currently a tedious to do this and error-prone too.
The output indices are the same as the input indices, maybe you can stick to the order of LRGB to not have to guess, so L 1, R 2, G 3 and B 4.