My understanding of how to use KQL to query against the automatically created managed properties which have the form of owstaxIdProperty, that is that to query for all items with a given term, the syntax is, based on this post by Mikael Svenson:
However, when I try to enter a similar query through the query to the results.aspx page by entering a url similar to (with the # encoded as %23):
I obtain no results and a message as in the image below, which suggests to me that the query is getting through
If I write the query just as
Property:TermLabel, the query works and the expected results are returned but I think this could be inaccurate if you have duplicated term labels, as I do
This question is similar but I suspect that the poster is using SharePoint 2013, rather than 2010
Another possibility is that I should be using the WssId instead of the termGuid, as is suggested in an MSDN post on "Querying on Managed Metadata Field Values in SharePoint Server 2010 (ECM)" (sorry, I can't post more than two links)
Has anyone had success with similar queries using SharePoint 2010?