In the original Dark Kingdom arc, Queen Beryl remained loyal to Metalia during the entire series and did not try to obtain the Silver Crystal for herself like she does in this series.
In the manga, The Dark Kingdom uses video cassettes to brainwash people instead of DVDs like they do in this episode. DVDs did not exist when the original manga was first released.
Queen Metalia's introduction is similar to the original manga, in that Queen Beryl gives human energy to her to awaken her, and Beryl stands in a similar position like she did in the original.
In this episode, due to the change of time setting, Mamoru's apartment has a very modern-looking wall-mounted HDTV, which did not exist when the manga was first released.
When Zoisite attempts to kill Tuxedo Mask and Sailor Moon with a large crystal, this could be a reference to the original anime series, where in Hikari kagayaku ginzuishô! Tsuki no purinsesu tôjô (1992), Zoisite had summoned a large crystal behind Sailor Moon to kill her, but it instead hit Tuxedo Mask when he jumped out in front of it.