If Murray is still half owner of the bar, certainly he would have set up a better system in place before he left. No way would he had left Archie in charge of the books!
In one scene, Edith mentions that Stephanie's father is her nephew, yet it is established in the final season of All in the Family that Floyd is her step-cousin, not her nephew.
It's mentioned in this epsiode that Edith graduated from Bayside High, an actual high school in Bayside, Queens, NY. However in the All in the Family episode, "Class Reunion", Edith attended the 30th reunion of Fillmore High where she was a member of the Class of '43.
Mike's losing his job for marching in the nude was a good way to create a conflict with Archie. But don't you think that if Mike really lost his job that way the last place he would want to visit for the holidays would be Archie's?