A process property is marked as both extensible as well as persisted. In this case, during process execution which value would be referenced by the process.
For example, a value LAST_RUNDATE was set as 1/1/2017 and persisted. Before the next run, the LAST_RUNDATE is set as 1/2/2017 in the extensions. In this case, I am seeing that the persisted value is referenced. Is this expected? If so, what happens to the value provided in extension.