Changes to index data are logged in the history of a folder or register. The administrator can individually configure for every object type whether earlier versions of the index data can be restored.
Saving index data versions can be individually enabled or disabled for each object of the object type. Use the 
Properties function in the context menu of the selected object to switch the index history for an object on or off.
The history of a folder can be opened from the context menu or by pressing F11.
To open the history, you will need the 'Write index data' access right for the object type and the Open history system role.
You may also require additional roles and rights within the history.
When you open the history, the 'Only changes' filter, which only displays changes to the object, is set by default. See Creating View Filters for a description of how to create your own view filters for the history.
In addition to changes to the object, numerous other history events are logged. The meaning of the stored history events is described in History Events.
If you select an item, you can press Details to view more detailed information.
If older versions of index data have been saved for an object type, you can use the View button to display the data sheet with the index data for each change entry before the change was made. The fields are read-only.
Restoring Older Versions
Use the Restore button to open an older index data sheet for recovering older object versions. You can save the old index data, with or without having edited it first.
Since rights group fields are not historized, they retain their current value when older object versions are recovered. This means that authorizations of older object versions will not be restored in this case.
Permissions resulting from clauses on other index data fields are restored when older object versions are recovered.
Restoring and editing earlier index data versions will also be logged in the history.
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