AutoSave is another useful feature of Reality. It automatically saves your changes in Reality Graph. This feature works according to some conditions.
Opening Auto Save File
Auto Save, stores your changes, as .rnode extensions files in R:\Reality\AutoSave folder as day by day.
Click OPEN button in Reality Setup.
Choose an auto save file from R:\Reality\AutoSave.
If you want to save all operations step by step, use INCREMENTAL SAVE which is at bottom of the Reality Setup Application.