Unable to import (known-good) .dxf

Not using Adobe Illustrator now, but a short time ago created a simple drawing (floor of a birdhousw).and exported to a .dxf.

Now, I am unable to import that file into a new CorelDraw 2022 drawing.

What I get is a single line (handles will not expand it) and not a bit of the original drawing imports.

Anyone else had a similar problem?  Don't mean to repeat an asked question, but can't navigate to a search input.

The .dxf is attached if you would be so kind as to attempt importing it.

Thanks.