It was my understanding,as far as the $6.1 billion to Central States goes, it has been paid in full long ago.
Here is the beef now and why a lot of people think they still owe.
I’m copying something I’ll try and get the link if you are interested.
The Central States Pension Fund used to administer pension benefits to a group of unionized UPS drivers, but the company left the fund in 2008 as a way to save money and provide retirees with better benefits. It set up its own pension fund, but only took current workers with it. Any UPS drivers who had already retired would still be covered solely by the Central States fund.
"We do not have a contractual obligation to cover supplemental benefits for those UPS employees that had retired and were in the Central States fund prior to 2008," a UPS spokesman told CNN Money.
UPS paid $6.1 billion in order to exit the fund. That should have covered the pension costs for UPS workers in the Central States fund that retired beforehand, including Dopp.
Here is the link. The 6.1 billion was paid .
https://money.cnn.com/2015/10/27/retirement/ups-pension-cuts-central-states/index.html