This is the last time any original footage of Kimberly (Amy Jo Johnson) appears on "Mighty Morphin Power Rangers". Amy Jo Johnson will not reprise her role until the film "Turbo: A Power Rangers Movie".
Though the three part story "A Different Shade of Pink" takes place after this episode, it actually aired before this story. This explains why Kimberly is still a Power Ranger and Katherine isn't.
Canonically, this episode takes place between "The Potion Notion (1995)" and "A Ranger Catastrophe: Part I (1995)", which explains why Kimberly is still present as the Pink Ranger. Alternatively, the Kat version can take place before the final scene in "A Different Shade of Pink: Part III (1995)" since Kimberly spends possibly weeks or months training for the Pan Global Games.
Bulk and Skull's intro shot for the season can be found here.