The problem comes from the propagation of information from the PI to the connected RI. The rule is that the PI definition is propagated to the RI it is connected to.

When changing a RI parameter name, the connection update rules are also called and then the parameter is changed to its new name and then changed back to the value defined in the PI.
In fact, this problem happens for all the elements of the parameters (type, direction...)

The use cases are to be defined:
- when an inter RI delegation exists, the deeper RI definition has priority. Thus shall the upper RI be read only except its name and its parameter names?
- when an inter PI delegation exists, the deeper PI definition has priority. Thus shall the upper PI be read only except its name and its parameter names?
- when an PI-RI connection exists, the PI definition has priority. Thus shall the RI be read only except its name and its parameter names?

Any other use case?