The language sounds like you will be able to continue to contribute pretax while also paying back the loan with posttax money.
This has been my experience too. I was able to contribute pretax money while also paying back the loan. It used to show up on my paystub as separate line items.
On a separate note, even though I left the employer from whose plan I'd taken the loans, Fidelity allows me to do monthly coupon payments towards my loan.