The organizational chart is kept up with double-sided tape. Departments are merged and others split. Complete departmental duties change. Job titles change in an attempt to identify the work the person is doing. Employees are more diverse.
Some employees have a traditional academic background, while others have strong vocational training.
Your senior staff members not only have a box, but they have added rooms on and don't want to come out. Develop a positive attitude. Make yourself, and help your employees, realize that the change is in the best interest of everyone. Identify the positive factors that are being proposed in the change. Celebrate the past, but don't erect a monument to it.