This coming מוצש"ק (if
Mashiach won't arrive)we won't be eating מלוה
מלכה. When else during the
year do we not eat מלוה מלכה?
According to Harav Yitzchok Zilberstein
Shlita, When Yom Kippur falls on a Shabbos there is no* חיוב to eat מלוה מלכה.
Since on Shabbos we don't eat, there is no need to be Melaveh the Shabbos by
eating מלוה מלכה