I read that link. The withholding is only for the taxable part (the interest). You will have to ask them if you can just take out the contribution part and rollover the pre-tax interest. I don't think you can get it on a "paycheck" it will just be a regular check or direct deposit to your bank. Then in January you will get a 1099R to enter into your tax return even if it is not taxable. @dmertz
