Print trailer number on 7533.

Having the trailer number print on the 7533 from a data field within the entry summary is helpful so that the MX carrier can ensure the proper filing of their documents to match the US documents at the time of border crossing. We've run into issues many times that the MX manifest has been incorrect and since our documents do not automatically print the trailer number, it is difficult for the crossing carrier to find the entry number that matches their trailer number. We understand we can type the data manually when we print the 7533, but it would be nice to have it print from a data field when we are entering information within the entry summary.