With the addition of the SPFConsolidatedTagDocument relationship definition, you can now create relationships between consolidated tags and the published document master.
The SPFConsolidatedTagDocument relationship definition was introduced in SmartPlant Foundation version 2018 (7.0). Documents published and consolidated after that relationship definition was added will automatically have this relationship created for consolidated tags. However, for documents that were published in a version before 2018 (7.0), you will need to republish or reconsolidate the associated document for the relationships to be created.