If you will say because of our past (crossing over) or of our mistake and our changing (one) is not able to return to (the) traditions of the first (former) fathers (the ראשונים)? --See the question (query) of the Mahari"s in a teshuva in his sefer of Questions and Answers- "Paoloth Saddiq" (ח"ב סי' עו) in a concept (point) dealing with cutting hair during the days of the omer where it was permitted for people who had taken on a new custom as a stricture upon themselves of not cutting the hair, to return to the traditions and cut.

Again we find in Sefer "Hhazan Ovadiah" by ha rav ha Jaon Ovadiah Yosef Slitah (a friend in the great court) --the head Rav of Tel Aviv Jaffa, laws of food articles that are kosher for Passover must ["חזון עובדיה" ח"ב עמ' סג ועמ' רצה] with a point of eating rice and kitnioth on Passover, the Sefaradim have a tradition to eat it while the Ashkenazim (based on a Hhumra) do not eat it during Passover. There it is written if the Sefaradim alone or many have taken this stricture upon themselves not to eat (rice and kitnioth) and desire to nullify traditions and to return to eating it on Pesahh, they are authorized to be released from the vow. (הרב שלום יצחק הלוי, מבוא ל"דברי שלום" בתאג' "חזון שמעון" עמ' לא ע"ב. ראה גם בשו"ת אגרות משה, או"ח ח"ב סכ"ד).