hello I have a 2004 Mitsubishi endeavor all wheel drive my wife is driving it she took a left hand turn and then all sudden the transmission was nothing she was able to pull off to the side of the road I went out and I found a 2007 Mitsubishi all wheel drive purchased it upon bringing it back to my place a business I disconnected the rear driveshaft supported the driveshaft up and then dalida vehicle with the front tires on the dolly I noticed today that even though the rear drive shaft is still disconnected when the vehicle is in park I can roll it frontwards and backwards by hand my question is should this happen does the rear drive shaft have to be hooked up for the vehicle tax be locked into Park