When working with data returned from a query wizard, refreshing a query occasionally produces undesired results. if this occurs, you can use the button to reverse the change. in other words to "un-refresh" the data?

We can used the undo button to reverse the change and in other words to un-refresh the data. We always use the undo button when we got the data incorrect and for quick working again we will just click the undo and it will back to were it is before. So you just need to click the undo button for reversing the change. 

Just trying to get some points : p sorry bro