Q. On Friday night we eat the bottom challa; is there reason to eat from the bottom Matzoh as opposed to the middle since this year Pesach and Seder coincide?
A. Shulchan Aruch (O.H. 274: 1) writes that on Leil Shabbos (Friday night) one holds both challos on his hands, but cuts the bottom one first. Remah (ibid.) adds that on Yom Tov or on Shabbos day he cuts the top one. The reason, he mentions, follows Kaballah.
During the Seder, Mishna Berura (475: 2) rules that one should hold on to all three challos during the brocho of Hamotzi. Then he should let go the bottom one, and bless the brocho on the matza on the top matza and the broken middle one. Pri Megadim (M. Z, 1) explains that we leave the third matza for the mitzva of Korech.
However, Piskei Teshuvos (ibid.) quotes different opinions as to what to do at the seder.
Hurav Shlomo Miler’s Shlit’a opinion is that one should follow the minhag of his family.
Rabbi A. Bartfeld as advised by Horav Shlomo Miller Shlit’a