I open an existing document in Google Docs and then go through the process of adding it to an existing Zoho Notebook.  However, when I open the notebook, where I expect the text in the Google Doc to now be on the notecard, all I see is a message that reads "Files without extensions cannot be previewed.  Download to view this file."  I am not sure how to proceed. I was hoping to use Zoho Notebook to better organize my Google Docs, but it does not work how I think it is supposed to?