What happens to the "EXPEDITE" instruction if a clearance is reissued without it?

When a clearance is reissued without the "EXPEDITE" instruction, it signifies that the original instruction is no longer in effect. In air traffic control, the phrase "EXPEDITE" is used to communicate to a pilot the necessity of immediate action or compliance with a particular maneuver, often to maintain safe spacing and traffic flow. If a new clearance is issued and does not include this instruction, it effectively cancels the urgency associated with the previous "EXPEDITE" order, indicating that the pilot is no longer required to adhere to the expedited actions previously given. This change in the clearance allows pilots to revert to their standard procedures unless otherwise instructed. Thus, the lack of re-inclusion of the "EXPEDITE" instruction signifies that the priority has shifted, and the original directive is no longer valid.