I guess it is another one of the inconsistencies... It was said they filmed the scenes in a certain order as to reduce transportation, for actor/actresses' busy schedule, as well as set-tup cost and spliced them together at a later date... It obviously created holes in the series.
The "MISSING" scene would be DFBB had fought against a couple of monks and because of her constant need to use up her energy to preserve LHC's life, she killed only 1 "disrespectful" monk and LHC used his sword style against a few fleeing monk who recognized it in order to save the now injured DFBB from the monks. The monks later called Fang Sheng to take revenge against them. However, when LHC was w/ RYY, LHC also killed a non-monk, while a baldy-monk also ran away. LHC later mentioned he has saved DFBB and she has also saved him, "I wonder how the conclusion to our story will be, LHC says?" I guess it is in reference to the monk battle that never happened.
Later on, at the temple, DFBB offered her own life as repayment for killing a monk. Not sure if the non-monk and monk are from the same school.
In the book RYY killed 4 "Shaolin" monks. I guess the name "Shaolin" is now trademarked in China as well as Wudang....