LiveCopy changes user and timestamp of not edited pages

Steps to reproduce

1.  Create a Master page of a site, e.g, /travel at our demo
2.  Publish the full slave site
3.  Change something on the root page of the master site (e.g, change the page title)
4.  Push changes to slave (not incl subnodes)
5.  Check all nodes of the slave page appears as modified

Expected results

Only parent page of slave site appears as modified

Actual results

All pages appears as modified

Workaround

N/A

Development notes

N/A