[WD20] ..PhysicalName locks the HChangeName function

Hi,

[Example 1]

Trace(MyFile..PhysicalName) display "MyFile"
HChangeName(MyFile, "CIAO")
Trace(MyFile..PhysicalName) display "MyFile"
HChangeName(MyFile, "SI")
Trace(MyFile..PhysicalName) display "MyFile"

[Example 2]

HChangeName(MyFile, "CIAO")
Trace(MyFile..PhysicalName) display "CIAO"
HChangeName(MyFile, "SI")
Trace(MyFile..PhysicalName) display "CIAO"

[Example 3]

HChangeName(MyFile, "CIAO")
HChangeName(MyFile, "SI")
Trace(MyFile..PhysicalName) display "SI"

Why?