Reportedly, Amy Jo Johnson had filmed three scenes as Kimberly Ann Hart contacting her Ranger pals to be used in later episodes of the TV series, but they were never used for unknown reasons.
Kimberly (Amy Jo Johnson) leaves the series in the finale. She will return in "I'm Dreaming of a White Ranger" and it shows her still as a Power Ranger, meaning it took place before "A Different Shade of Pink".
The reason Kimberly was able to transfer her powers to Kat just by giving Kat her Power Coin, despite that the Sword of Light was needed to transfer Jason, Zack and Trini's powers to Rocky, Adam and Aisha in "The Power Transfer: Part II" is probably because by this time the Rangers had Ninja Powers instead of Dino powers therefore her powers can be transferred differently.