I have a meta collection which groups 2 other collection types together. One is a collection of PDFs and the other is a local collection of xml.
Basically, the xml data included some extra information about the PDFs in the first collection. Currently queries are returning separate results for urls in both the xml and the pdf collection. This is expected behaviour from what I can see about meta collections.
What I want to do is group (based on metaclass v or the url) these results together so they display as one.
I've tried collapsing the results based on this
However, it doesn't seem to do anything that I can see.
Any ideas on what to check or another technique to do this?