Checking out the Erotica entry on Wikipeida, it seems the order could be more like:
-Love Hurts
-Erotica (Instrumental Demo) - prepared by Shep as one of four tracks he presented to Madonna
-Erotica (Rough Mix - 1992.01.15)
-Erotica (Final Demo 1 - 1992.01.16)
-Erotica (Final Demo 2 - 1992.01.16)
-Erotic (included on the SEX Book CD)
-Erotica (Album Version / Pre-Final Mix)
From Wikipedia:
While they were mixing a song called "Erotic", which was released as promotional single on her Sex book, Pettibone recalled:
"You have all these great stories in the book," I told her, "Why don't you use them in the song?" I knew that Madonna was developing a 1930s dominatrix look for Erotica, but I didn't realize how far she was willing to go before I saw Sex. It contained stories authored by her mysteriously dark alter [ego], Dita. Madonna took the book and walked out of the room and didn't come back until about half an hour later. Suddenly she was on the mic, speaking in this very dry voice. "My name is Dita," she said, "and I'll be your mistress tonight." I knew that the original "Erotica" would never be the same again, and it wasn't. The chorus and bridge were changed entirely and the whole psyche of the song became sexier, more to the point. It seemed as if Dita brought out the best in her, actually serving as a vehicle for the dangerous territory she was traveling. Actually, it was the same name Madonna used when she'd stay in hotels around the world. Not anymore.[6]