I finished rehabilitation for my federal loans last month and they were picked up by great lakes 3 days later. The 4 tradelines after the default were removed. The 4 before it are still there of course. On average how long after your new loan was picked up did the new tradeline show up? Will it be one trade line are will it be the 4 to match each loan. All 4 were picked up by greatlakes and i will be making one payment.
If you did not consolidate, then it should be 4 tradelines, even though you are making one payment. So if you are late with one payment, it's pretty nasty, because that's actually 4 lates.
It took 2-3 months for mine to appear after rehab (when I consolidated it only took 2 months).
My student loans always seems to lag behind other accounts as far as reporting is concerned.