The reason I ask is that in NZ, a visual approach clearance means you are unrestricted in both tracking and descent unless specifically stated.
At busy airports where you have been previously cleared for a STAR, you may be told the visual is not yet available or 'cleared visual approach tracking via ......... maintain ....... ft'. Seems to work.
Its the same in about 98% of ICAO countries in daylight....Is Oz different?