I'm using CMS import to import a CSV file.  When importing I want to find documents that have a field that matches the imported document and publish or unpublish this document depending on the value of another field imported.  I am unsure how to select the document however.

I was using the following but I have since organised the documents so they are no longer direct children of document 1282 and it no longer seems to work.

uQuery.GetDocument(1282).GetChildDocuments().Where(x => x.getProperty("courseCode").Value.ToString() == courseCode).FirstOrDefault();

Neither does

uQuery.GetDocument(1282).GetDescendantDocumentsByType("Course").Where(x => x.getProperty("courseCode").Value.ToString() == courseCode).FirstOrDefault();

Using this method also seems to cause the import to be very slow.

How can I find a descendant with a property that matches a certain value.