1. A method for managing a disconnected investigation, the method comprising: a base installation remote and disconnected from a disconnected installation at which the disconnected investigation is conducted, the base installation comprising: one or more server computers; a database hosted in a digital storage device on the one or more server computers, the database comprising a shared data repository and an investigation repository; and a revisioning database hosted in the digital storage device on the one or more server computers; at a first time: the one or more server computers identifying, in the shared data repository, an initial set of data objects to be the subject of the disconnected investigation; the one or more server computers identifying, in the revisioning database, an initial set of change records corresponding to the initial set of data objects; the one or more server computers storing the initial set of change records and the initial set of data objects in one or more initial base files in the investigation repository; at a second time that is after the first time: the one or more server computers identifying, in the shared data repository, an update set of data objects to be the subject of the disconnected investigation, the update set of data objects comprising at least one data object not in the initial set of data objects and at least one data object in the initial set of data objects; the one or more server computers identifying, in the revisioning database, an update set of change records corresponding to the update set of data objects, the update set of change records comprising at least one change record pertaining to a change to a data object in the initial set of data objects made in the shared data repository after the first time but before the second time; the one or more server computers storing the update set of change records and the update set of data objects in one or more update base files in the investigation repository.