The write that you can import local notebooks here: https://help.evernote.com/hc/en-us/articles/209005107-Convert-local-notebooks
If you have local notebooks, you will automatically see the tool the first time you launch the new Evernote for Mac or the new Evernote for Windows, or you can find the tool any time by going to Tools > Check for Local Notebooks from the menu bar.
I do not even have this option in Tools menu.