It was i think in Home Front when they were stuck in WWII , Archer fixed it and we see Daniels at end alive and well. I`m not sure but i also think that was the last of Daniel we saw in ENT.
Bro dont take it personaly , i wasnt talking about u . Its just that everywhere i turn someone either hates Ent or JJ`s movies. And ok it did have some flaws but hey nothing is perfect :)