loubylou and clear4takeoff
Do you have any reference for what you say?
Here is what I found in American Professional Pilot magazine: "After the STAR has been issued and accepted, any subsequent ATC changes to charted altitudes or speed restrictions does not cancel the remaining altitude or speed restrictions shown on the charted STAR procedure. Airspeed and altitude adjustments are commonly used during STARs to achieve traffic sequencing and separation."
Any coments from USA ATCOs?