Emergency/Priority indicators

Hi,

I have some questions regarding the emergency and priority context
attributes:

1/ Assuming, for example, that a context was created by an Add command
with priority=5. Then a Modify command is issued by MGC with priority=7.
Does this mean that the context priority is changed to 7?

2/ Assuming, for example, that a context was created by an Add command
with the emergency indicator (emergency is ON). A consequent Modify
command omitting the emergency indicator is issued by the MGC. Does it
mean that this specific context is not anymore an emergency context?

3/ Are these scenarios of modifying the context attributes reasonable?
Or, is it expected that a specific priority level set to a context will
not be changed until the context ceases?
    
Thanks for your help,
Miri