If the data source is changed, such as new fields have been added or data values and field names have been modified, the view will reflect those changes the next time you load the page. However, you may need to manually update the view using the Refresh Data button on the toolbar.
When you refresh the data, you clear any cache that may exist and retrieve the latest data from the data source. This option is different than the Pause Automatic Updates option, which still may load the view based on cached data. Depending on the size of your data source and the view, refreshing the data may take longer than other queries that operate on cached data.