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Description
In some cases, we’ve noticed that the document filter will not work for documents whose terms have been moved from one node to another in the term store.
Solution/workaround
The solution is to force SharePoint’s term set sync to do a resync of the effected term, see solution on this page: Renamed, merged or moved terms are not successfully synchronized to SharePoint sites.
Expected fix
We have communicated this issue to Microsoft and hope they will release a fix for it soon.