I had to download all files to my hard-drive using WinSCP.
You must use Binary mode, or it will not transfer correctly.
Use WinSCP to upload the files (Binery Mode) to: /opt/bitnami/apps/joomla/htdocs
It took well over 24 hours for the process, I have a fast system, great internet connection, and my site is now up.
I tried site to site for many days with Core SFTP, but it failed.
Hope this helps.
Let me know if you need further assistance.