Thanks Brenden for the response.
I see several of the attachments are stored on the old server in both the file system and database. How do I determine the path of where they are stored on the file system? If I click on one of the attachment files in System->Files->Attachments, I get this URL:
https://www.paalpstage.com/CMSPages/GetFile.aspx?guid=9300318c-04d0-4a18-8fd7-b898d5e35642
This doesn't tell me where on the file system to find the file.