I'm afraid that I can't offer any advice, other than get good legal representation.
The point you make is a very good one, especially for people buying used aircraft. I remember a few years ago someone purchased an R22 that was a couple of years old. When he landed at an airport it was impounded due to unpaid bills that the previous owner had incurred with that airframe.
It may not seem very fair at all, but it seems to be the way the law is written.
Ian