Cleared for an approach, then given a different altitude assignment

"KP" nospam@please wrote in message
...

VFR aircraft making practice approaches are supposed to be provided
standard IFR separation from the time clearance is issued until the MAP.


Only if the aircraft is a heavy or a Boeing 757.



However, sometimes full IFR separation not worth the effort so there are
provisions to let VFR aircraft do the approaches pure VFR with no
separation provided. The phraseology for that is "Practice approach
approved..." See FAAO 7110.65 4-8-11a(3)

Actually, it's the other way around. VFR aircraft practicing approaches are
provided separation where procedures are established for it. Where no
procedures have been established no separation is provided.