Published proxies are not indexed by the search service

Steps to reproduce:

• create a document with title "test proxy indexation" in some workspace;
• publish it to some section
• go to the advanced search form and search for documents with title "test proxy indexation"

You only get the document of the workspace and not the published proxy in the results list.

Possible cause: its seems by greping the indexation logs at the debug level that the path of the indexed proxy is the same as the path of the original document which could explains why the we only get one result.