The infantry stealth modifiers table page 130 'TO: AU&E' states that the ECM Sneak suit has the effect of 'Invisible to Standard/Light Active Probes', but doesn't have that note for the other sneak suit types.
This seems redundant if CI are invisible to probes by default anyway: Page 129 Total Warfare 'Under the Hidden Units rules, an active probe can detect any hidden ’Mech, battle armor or vehicle (but not conventional infantry, or battle armor infantry equipped with any type of stealth armor)'.
The table in TO:AU&E seems to imply a possible contradiction to Total Warfare. Can non-stealth suit equipped infantry can be detected by active probes when optional rules for sneak suits are in effect?