DRL

Would like to purchase if the following is possible. we have 2 field techs with computers but no internet available. they will both need a copy of express invoiceon their laptops. this will create 2 sets of data. The question. Can invoice data be merged to provide a consolidated single data file at a central point. Any suggestions to make this work? Or are we still shopping for a product that can merge data from multiple sources? Thank you Doug