...
Window will appear:
...
Read more:
Saving
Please note that "Save to database" has to be selected if you want to permanently save your changes.The functionality in this part of the program has not been as thoroughly tested as the parts designed for normal users. We therefore recommend that you save frequently. If anything should go wrong during the saving function, close dRofus and re-start (it is not enough to just close the editor). This will mean that data from the database will be re-loaded.
...
To view the changes in the window, click on "Refresh" or press F5. In order to view your changes, the values in the field must be saved locally, but not necessarily to the database
View Filter.
For Item data fields and Room data fields have to be added to a filter to be visible.
Read more:
Deleting fields, elements, groups and tabs
...