Aircraft Change

<p>Please explain to me how when an aircraft change occurs, my seat changes from 1 (first row) to 32!!! And at the gate the brilliant person assures me that it won't be a drastic change or at the tail of the aircraft. MN641 ORT to DBN, 7.12.16. Ridiculous taking the time out to check in online, then experience a delay and to top it off, this!!!!!!!</p>