Duplicate Accumulator rows in the Middle of a Calendar Year

Hi, we have an unusual situation after an off-cycle (in the middle of a calendar year, e.g., 2022) process an employee's Result by Calendar shows two set of years accumulator rows. For example, one row I_AT_SICK_BAL for 2022, and one row I_AT_SICK_BAL for 2023.

I understand the delivered feature show two accumulator rows at yearend. But it this case, it shows up in the middle of a calendar year (e.g., in July period).

How did it happen? Is it an issue? Please advise!! Thanks in advance!!