…Have made the transition as described but had to remove tlp for pacman -Suu to work & then add tlp after the update. Having issues with some AUR packages not being retrieved:
ckbcomp is a dependency for manjaro-settings-manager
faenza-green-icon-theme has multiple dependecies
firefox-beta-bin update/install reports no i686 version when it seems to be listed in the firefox index page https://ftp.mozilla.org/pub/firefox/releases/58.0b4/
note: firefox-developer 58.0b4 downloads & installs from AUR & other AUR updates seem to work.
Thanks for you consideration & replies in advance.