import passwords from CSV file
Sure, see Import login data from a file.
^: See the note at the bottom of that article about how to enable CSV import via the about:config page.
If there are problems with importing then use "Create New Login" in Lockwise and export this file to get an example of the format of the file.
Thanks so much. It worked perfectly. I did have to go through the steps of getting "Import from a File" added to the drop-down menu.