Change Department, Class and Location on Time Entries via Mass Update

Note: Make sure Department, Class & Location feature is enabled via Setup > Company > Enable Features > Company.

Solution:

1. Navigate to List > Mass Update > Mass Updates
2. Click on General Updates
3. Select Time
4. On the Criteria tab: 

• Add field Department and set description  is equal to Department 1
• Add field Location and set description  is equal to Location 1
• Add field Class and set description is equal to Class 1Z

5. On the Mass Update Fields tab: 

• Check Department and set value equal to Department 2
• Check Location and set value equal to Location 2
• Check Class and set value equal to Class 2

6. Click Preview button
7. Click on Perform Update button