Refer to data page is used to just refer the data from the data-page that was given in the property (page or list) rule form but the data is not stored in the property. The property only contains a reference to a data page. The current data gets displayed here.
The property always points to the current version of the data page. Whenever a data page parameter is updated, a new data page is created. The property then points to the new page.
Copy to data page is used to copies the data to the property from the source data-page which was referred in the property, but the data is not retrieved from the source again unless the request parameters change.
The first time the property is referenced, the data page is created, and the data is copied to the property
In case of Copy From Data Pages,I created a work item W1 which has a property that has copy from Data Page option,Now data page is refreshed,will W1 have the new value populated ,whenever the property is referenced or only new cases will display the updated values and not the inflight cases?