In this example you maintain a routings without using history.
The system creates a single change status for each object. This status is valid from 1/5 (see graphic below).
Your changes are valid from 1/5 indefinitely. You also assign a new material component (see graphic below).
You display the routing for the key date 7/5. The material component is not displayed, since the assignment is not yet valid on the 7/5. The header, operation 10 and operation 20 are displayed as changed.