I do have a feeling he did two shows of this collection. Maybe Gianni was a perfectionist and didn't like the way the first one did go. I have noticed small differences besides the ones you have mentioned, such as different floor pattern, the lightning, Brandi bumping into Shalom and Kate Moss's straps positions on her black dress. In a second video the girls are waiting for Gianni at the end of the catwalk and he emerges with Karen and Nadja by his side, but in a first one it's Karen and Helena with him. I think the same thing happened with his Spring 95 Couture collection because I was trying to find the pictures of Karen in long beige and white satin strapless evening dresssplit as it was seen in a video, but in my archives the exact same dress is worn by Kristen Mcmenamy on a runway:
https://www.alamy.com/model-kristen-mcmenamy-presents-for-italian-designer-gianni-versace-this-long-beige-and-white-satin-strapless-evening-dresssplit-to-the-waist-as-part-his-springsummer-1995-fashion-collection-january-21-image381960077.html