Picking up my new 46 backhoe next week for my 2520

I was told by 2 dealers and Johne Deere that the MMM brackets would not have to come off the tractor to install the 46 backhoe frame, I am reading a lot on here that they will I am very confused. I use the MMM 62D to mow and it will be a real pain to have to attach the brackets every time. I am new just joined today but wanted to get some feedback with current users. I did see some posts where the 46 frame was modified to work with MMM brackets. Do the newer 46 have this already done? I will be upset when it comes if this is not the case. I mentioned I did talk to JD customer service and ask the questions they called me back after talking to engineers and said only MMM mower has to come off no brackets.

Any thoughts Thanks