1. A process for capturing a state of a data input interface at a particular time, the data input interface providing an interface for entering actual data to populate a field document, wherein the data input interface is modified on a plurality of occasions to accept input of additional or alternate types of actual data, wherein each modification of the data input interface is a version of the data input interface, the process operating within a workflow process, the workflow process controlled by a processing system, the workflow process designed to facilitate the preparation for and performance of a complex project conducted between parties, wherein the parties are connected to the processing system via a communication network, the field document documenting the performance of at least one component of the complex project, the process comprising: saving a first version of the data input interface, wherein a first set of actual data has been entered via the first version of the interface; storing modifications to the first version of the data input interface to create a second version of the data input interface; activating the second version of the data input interface, wherein a second set of data can be entered via the second version of the data input interface; deactivating the first version of the data input interface to prevent further input of the actual data via the first version of the data input interface.