RotateObjects (Group) issue in Python

Scripting
1

I made simple script which rotate objects.

I selected a Group and rotated by this script.

(rhinoscriptsyntax.RotateObjects (Group, Copy=True) in Python,)

But in result,
Rotated Objects are included in a same group of selected group . (source objects)

2

Use rs.RemoveObjectFromAllGroups(object) for every object you rotate.

GM