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Dylan Acres, in his Life at Maison Ikkoku, in the section "About the Manga", writes:

A comic book was released every month that collected two chapters from the series. About every six months, Viz collected the chapters as a graphic novel. Fourteen graphic novels of the series were released. In 2004, Viz began re-releasing the collected graphic novels in a new second edition. Although smaller in size, this new release was far superior to the old graphic novels in that the artwork was restored to its original right-to-left layout, the chapters are broken up into the Japanese count, now making the complete run available in 15 books, and most importantly, the missing chapters from the first run were translated and restored to the series, finally giving fans a truly complete look at the series in English.

The first Viz run of Graphic Novels missed a few chapters, among them the chapter you are referring to. Another chapter, I understand, that is missing from that first release is the chapter where Godai and Mitaka compete for Kyoko's attention while Ice Skating. I believe, in all, four chapters were withheld from that release. As Dylan notes in his website, these chapters were restored with the 2004-2006 release of the manga.