Incremental safe

Only two years ago Rhino for Mac showed an incremental safe in the File menu-bar. A very practical way to safe files while working on a design.
Why is it gone and will it come back?

Hi Ton,
Rather than incremental save the process on the Mac I believe is to save and then use “Revert To” from the file menu to restore to previous versions. Personally I like the incremental save so “Save as” has now become my incremental save. I use Text Expander to keep the typing to a minimum.

I think IncrementalSave should be a hidden command (just like SaveAs) for Mac/Win users as myself. Since I work on both Mac and Windows, I can’t rely only on Mac versions. I have to run SaveAs and manually specify a different number each time.