Ok thanks. I'll wait for a button to track all settings-selected groups indefinitely (or similar). Whatever the case please make it easy.
Don't like it. Even if you go with this make a note, like IPB makes with admin password, that this can't be changed in frontend but only in ACP. Similarly instead of error, show that this info can be shown only in ACP, or even better put a link for direct ACP access into the specific LOGS (or similar) for convenience.