By this time ABC announced they were canceling Full House.
Scott Menville, who pays Duanne, voiced Robin the Boy Wonder for several years on "Teen Titans" (2003) and "Teen Titans Go" (2013). Jason Marsden, who plays Nelson, played actor Burt Ward who famously played Robin on Batman (1966) in "Return to the Batcave: The Misadventures of Adam and Burt" (2003).
This episode serves as a sequel to the season seven episode, The Test