Deleted interior view marker can no longer be restored using Undo

Issue Description

You have accidentally deleted an interior elevation marker from the interior elevation group. And you are unable to restore the marker using Undo (cmd+z on macOS or ctrl+z on Windows).

Solution 

To resolve this issue, restore all interior elevations in the group. If interior elevations were created as part of a group, for example, using the Polygonal, Rectangular, or Rotated Rectangular geometry method, deleted markers from the group can be restored.

1. Identify the group of interior elevations containing the deleted marker.
2. Right-click the group in the Project Map or the View Map.
3. Select the command Restore All Interior Elevations in the Group from the context menu.
4. Confirm that the deleted interior elevation marker(s) are regenerated for the group.

Notes:

• 2D elements in the non-deleted interior elevations of the group remain intact during restoration. 2D elements from the deleted view cannot be restored.
• Restoring does not work for section/elevation/interior elevation markers created using the Simple geometry method.