Home track switching to NHRA

My home track, Xtreme Raceway Park, south of Dallas, has just announced that they are switching to NHRA sanctioning body. The problem is the season started down here 2 weeks ago.
They have the 2nd bracket series race coming up next Fri/Sat. They are having a driver's meeting Friday to inform us of any changes. This took me and my friends completely by surprise and we don't know what to expect.
They have been IHRA since they opened and are IMO the best 8th mile track in the southwest.