Work In Progress
Thanks, I see that:
Some Python tools were moved from one area of core Rhino into another, to make it possible to get these same tools in Mac Rhino.
The result is an old menu item and a new menu item.
We do not automatically replace your tools in the released builds of Rhino.,
To clean it up, run the ToolbarReset command and restart Rhino.
Before you do, remember to save copies of any menu and toolbar customizations so they can be reapplied after resetting the default toolbars.