Guys I have followed the steps on 3ds.guide and successfully switched from Gateway to Luma, merging my old EmuNAND with my SysNAND. At the very last step, where I used Luma Updater to update Luma to the latest version, it asked if I wanted to use CTR something and I picked no, because I have no idea what it is. I said disabling CTR functionalities and finished the setup.
Did I do something wrong? I mean nothing is broken as far as I can see but is CTR a better option or is it required for anything? Thanks.