We have a sheet that has all of the formulas working, I have verified that the formula is the same by copy and paste, yet all of a sudden this last line will not calculate the birthdate correctly.
2023-01-11 2020-01-08 3y,0m,10d 3y1
2023-01-11 2022-12-15 0y,0m,10d 0y2

First date is the date they contacted us, second date is the date they were born first line works, second line does not. If I change the 2023-01-11 to anything after the 16th, 2023-01-2016 it works. But if I change it to a date of contact before Jan 16, it breaks and tells us the child is 10 days old. There are multiple lines above that work find, its just this newest one at the bottom that isn't working. Ive tried copy and pasting the formulas from the lines above and it still breaks.

Here are the two formulas for the age that works and age that doesn't, in order

=DATEDIF(F13,E13,"Y")&"y,"
&DATEDIF(F13,E13,"YM")&"m,"
&E13-DATE(YEAR(E13),MONTH(E13),1)&"d"


=DATEDIF(F14,E14,"Y")&"y,"
&DATEDIF(F14,E14,"YM")&"m,"
&E14-DATE(YEAR(E14),MONTH(E14),1)&"d"