Currently watching Season 2 and finding some episodes I've never seen before. Also noticed, these episodes Eddie is missing. On the 3rd disc so not sure if Eddie shows up again before seasons end but wondering what happened to Eddie that he is missing from a block of shows and coincidentally (at least for me) these are episodes I've never seen (or recall)?

That's interesting. I seem to recall a block of episodes in season 5 where Eddie was missing, too, (e.g. Wally stays at Lumpy's after a party at Lumpy's house; and the one where Beaver and friend watch a scary movie on tv and call the cops on Lumpy and another guy who are waiting outside wearing masks.)

I do remember at least two Eddie Haskell eps from early in the second season, one where Eddie causes an international incident of sorts by telling Beaver to insult his new friend Chuey in Spanish, and another where Eddie witnesses Wally's first shave and Ward's wrath at Wally for using his razor.