FSA Rate/Coverage needs to be changed to half a year

Summary:

Hello, our FSA rate is currently setup as an annual rate, but we are going through a merger, and we will be switching over during the middle of the year (June/July) to a new system.

Is there a recommendation on how to handle a situation like this for FSA? We need to limit the amount that the employee can elect to half of the IRS limit for 2025 but we still need the deduction amount processed to equal the coverage amount elected.

Thank you.

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