Yes I will. Those 7 channels are MACRO commands that we use-used before SuperStar. Some of mine have the "unused" Macros and some are empty. Most do not use macros anymore to program the ccd's. It is a in to remove the channels if you have a lot of ccd's but doable. I recommend leaving them as I think they just take up space??
Well, the problem with always leaving them in is that they then screw up the Nutcracker models and such. For example, another use case is to take an LMS file, import it into xLights, then use the Nutcracker tab to overlay some cool effects onto the models. Nutcracker models are generally a continuous block of channels. Having those extra 3 channels for each CCR would make it quite a bit harder to setup the models as you'd have to specify individual start channels for each string. The "automatic" stuff (create a tree, 12 strings, 50 pix/string) wouldn't work.
I keep thinking the Convert tab may need an extra set of options to select. The "empty channels" handling would be one. DMX universe lookups (not currently done, but I'd LIKE to do for both LMS and hlsIdata) would be another.