1. A method comprising: receiving a request to modify a field of data, wherein the field of data is identifiable by a received field key comprising a field address number (FAN) and a new row key (NRK); determining whether the field of data was rendered for display; in an instance in which the field of data was rendered for display, using the FAN of the received field key to locate an address object associated with the field of data; in an instance in which the field of data was not rendered for display, identifying a different FAN associated with the field of data by locating the received field key in a field key lookup map, and using the identified FAN to locate the address object associated with the field of data; and modifying a field of data using the located address object.