Confluence advanced search problem

[Irina]

Confluence version - 6.15.6

How can I find User`s comments in the specific folder in the space?

Advanced search no result when comment for creator:User and set "label" or "ancestor" or "parent" as additional filters.

Example:

https://confluence/dosearchsite.action?cql=space+%3D+%22SDL%22+and+type+%3D+%22comment%22+and+creator+%3D+%22User%22+and+ancestor+%3D+%22122092598

And for REST API work:

https://confluence/rest/api/content/search?cql=(type=comment%20and%20space=SDL%20and%20creator=currentUser())

But no result for:

https://confluence/rest/api/content/search?cql=(type=comment%20and%20space=SDL%20and%20creator=currentUser()%20and%20ancestor=122092598)