If you now call restartComponent with kParamTitlesChanged|kParamValuesChanged, the host should have the new parameter names, flags and values. The host will not send the values to your processor in the process call this way.
So if you need them there, but without going thru the beginEdit, performEdit, endEdit methods, you could allocate an IMessage with IHostApplication::createInstance() fill it with the necessary information and send it via IConnectionPoint::notify to your processor.