Burst GroupKeyCreator \ Tools \ Non-Geometric \ Group \ Burst-Group
The Burst Group function is used to break apart an existing group. It will remove all entities within a group, and leave the group itself intact.
Using the Function:
1 Select Burst from the Tools>Group submenu.
2 Enter the name of the existing group you intend to burst.
3 Select ACCEPT. The indicated group is then burst. If there were no entities in the group you indicated, an error prompt will be displayed stating that the selected group is already empty.