If you need to select a different document, or simply renew an existing policy for example, you can you the Replace function.

There are multiple ways you can replace a file. The simplest way of doing this is directly from the edit document page as shown in the video below :

Replacing multiple files at once? 

You can use the drag and drop functionality to replace multiple documents more efficiently. Go to the My Files dropdown section as shown in the screenshot below:

Next, upload your files (maximum 15) that will be replacing existing files. You can then drag and drop these onto the documents within your table, quickly editing the dates from one place before moving onto the next.