FSA deductions using 26 check dates instead of 27

Our benefit plan year is the fiscal year and we're having an issue with the Flexible Spending Accounts taking the annual amount and calculating the rate based on 26 checks in FY23 when it should be 27. There are 26 pay period ending dates but 27 actual check dates - 1st check was Jul-01-2022, last check is 30-Jun-2023. This is for biweekly payroll.

I've seen the notes regarding the reverse situation where the system is using 27 and not 26 (Rates Calculated Based on 27 Pay Periods Instead of 26 [294824.1] and Rate Calculates on 27 Pay Periods Instead of 26 For Certain Years [283666.1]) and they indicate that FSA plans should be using payroll check dates already by seeded function.