Different origination dates

I refinanced 2 loans (main mortgage and a heloc used to help buy the home) into 1 loan in 2021 (ill call this loan 2).  Then this loan was sold to another lender (loan 3), which they then sold to another lender (loan 4).   I have five 1098s.  Loan 2  has a different origination date than loan 3 and 4.  3 and 4 use the closing date, and loan 2 uses the funded date.  Neither will change their forms.  
Question 1: Which date do I enter as my origination date to keep this consistent across in turbotax?  Is it okay to enter one date despite differences across the 1098s?

Question 2. Can I just enter all five 1098s and answer the questions or do I need to combine any of them or apply any special treatments?

Question 3.  I paid points for the refinance (loan 2).  But these points aren't listed on loan 3 or 4 1098s.  When I go through the questions for loan 3 and 4, why does turbotax ask me "Did you pay points in 2021 when you took out the loan?"...   If I say yes then loan 2, 3, AND 4 have points (counted thrice).   

Thank you so much!