Deductions & credits

The Pension administrators refused to issue two checks- they stated you must select a ROTH or a traditional IRA rollover and then split the funds at your institution.  The lump sum was deposited into a traditional IRA account, then the after-tax contribution portion was transferred to ROTH within 3 business days.  Since there were no earnings on this transfer of after-tax funds, is there any option to treat it similar to a backdoor ROTH conversion?