I used a work around to get the notes with images into Joplin.,

1 - Export Bear notes to html files,
2 - Import notes into Legacy Evernote.
3 - Export notes from Legacy Evernote into enex file(s).
4 - Import enex file(s) into Joplin.

It took a bit of work, and a few days, but it's done. My data is in Joplin!