Importing Org&Empl creates new Org and strage employee

I have a test space with an organisation called ACME and two Employees Jan & Piet. They are linked with properties Empl->Company & Emp-Emp: Work with.

I have a test space for import where I already created the organisation ACME.

If I export Jan (as markdown including subpages) and import it in the second space, two things happen:

1) I get a second company ACME

2) I get three people: Jan, Piet and ./Jan.md

Unfortunately I cannot add the exported ZIP file, but I can share it if needed.