Hard link preservation

Is there a way that urbackup preserves hardlinks, similar to the -H option in rsync?

A simple test results in the following:
-rw-r–r--+ 3 user group 27 Jun 17 20:35 basic-test.txt
drwxr-xr-x 2 user group 4096 Jun 17 20:35 should-backup
-rw-r–r--+ 3 user group 27 Jun 17 20:35 test-ln.txt

basic-test.txt hardlinks to test-ln.txt and a file in the directory should-backup (so three hardlinks).

Restore result:
-rw-r–r--+ 1 user group 27 Jun 17 20:35 basic-test.txt
drwxr-xr-x 2 user group 4096 Jun 17 20:35 should-backup
-rw-r–r--+ 1 user group 27 Jun 17 20:35 test-ln.txt

As can be seen, the hard links are not restored.

How do I solve this?

Jaap