1/ 1A Sex and the Single Parent: Stephanie becomes a cheerleader but her making the squad is never mentioned again. Then in Break A Leg, Stephanie: After being stoked at making the cheerleading squad at her school in #1, Stephanie decides she wants to go to a different school??

2. Barney and the Hooker: Barn gets engaged to Dottie who is never seen again

3. The Date: after becoming Archie's Accountant and Billie suggesting they go out on a real date, Roger Abbott is never seen again

4. Archie Fixes Up Fred: Fred quits and is never mentioned again after Veronica said in The Cook they were a package deal

5. Captain Video: it looks like Barn has found luvv w/Laura but she is never mentioned again and Barn soon resumes pining over Blanche.

Honorable mention: Bunker Madness