A person can buy a really fast bike like one of the new BMWs, race it in production class, do some small thing to disqualify it after setting a record, then run it in the modified class, set another record, then make streamlining from duck tape to qualify it for modified partial streamliner, set a record there, then do something to disqualify it from modified partial, like lengthen the tail an inch past the rear wheel with duck tape, then set a record in special construction partial streamliner.
I know this from experience. A few of the records I lost were to folks hopping around in different classes with very nominal changes. It is bad for the sport and it especially hurts the special construction builders. It is very hard for them to home build bikes to beat the latest factory equipment.
The AMA might be doing the right thing for the long term health of LSR. How they are doing it is questionable at best.