Importing / Exporting same item at root path creates inconsistency data

Steps to reproduce

1.  Go to pages app at our demo
2.  Export /sportstation node
3. Import it
4. Check the site sport station is duplicated

Expected results

The following error is thrown Caused by: javax.jcr.ItemExistsException: This node already exists: /sportstation

Actual results

The node is imported duplicating the existing one

Workaround

N/A

Development notes

This behavior also happens on Contacts and Assets app. But it only applies on the root level of the workspaces, if you try to export / import a child node, e.g, /sportstation/about, then the expected exception (node already exists) is thrown:

Caused by: javax.jcr.ItemExistsException: This node already exists: /sportstation/about