Yes, when using the "Upload a New Version" feature on the "Document Details" page, you have the option to clear the expiration date for a Document.
1. Navigate to the "Document Details" page of the Document you want to upload. Select the "Version" button, then select "Upload a New Version" from the drop-down menu.
2. In the upload pop-up window, make sure that the box next to "Clear Expiration Date" is checked. This will allow you to set a new expiration date after you upload the new version of the Document.
3. To set a new Expiration Date, click the "Set Expiration Date" button in the left column on the "Document Details" page. For more information on setting expiration dates, please see: How do I set due dates and expiration dates for specific documents?