There is a problem with Plant 3D and “Related Files” only retrieving the Original Upload of the specific Related File. Revit Exported DWG’s are required for backgrounds in Plant3D, and these can be updated multiple times a day. Using a automated method, we export 3D DWG's from Revit for backgrounds Using a API driven procedure, we can update BIM 360 files into any folder from “outside”. If we instance a Revit Exported DWG into Plant 3D “Related Files” thru the Plant 3D GUI, then replace it from the API side, you would expect a up-to-date “Related File” linked background to be retrieved when a Plant3D Model was opened. Unfortunately no… Only the “original seeded version” of the file is ever retrieved from BIM 360 “Related Files” However, if you review the file in the BIM 360 Drive “Related Files” folder, it is updating. The problem is that the members of "Related Files", as listed in the Plant 3D Project, are actually linked to the BIM 360 GUID/OID of the "original" file version upload into "Related Files", not the "Current" version of that file in BIM 360. Variant of problem... If you link the Revit Exported DWG from any BIM 360 folder into a Plant 3D defined Model you will get the current linked DWG Background, but the DWG will not be retrieved when opening the Plant 3D Model, you must pre-cache the DWG file in the BIM 360 drive manually. If you link the Revit Exported DWG from any BIM 360 folder into a Plant 3D defined Model “container”, and then link that Plant 3D Model into another “as attach not overlay” you will get the current linked DWG Background, but the DWG will not be retrieved when opening the Plant 3D Model, you must pre-cache the DWG file in the BIM 360 drive manually. Plant 3D does not "research" Xrefs linked into Plant 3D Models that are not in control by the Plant 3D Management Dialog. Consequently there is no effective way to directly use other "backgrounds" from other Autodesk Products without Manual Workarounds. Solution Proposals: Since "Related Files" are -NOT- Plant 3D Models, or files that are generated/controlled by Plant 3D, change the SQL embedded GUID/OID to reference the Non-Version Specific GUID/OID, such that when requested as a linked Model, the "Current Version" can be retrieved. Either change the value to be current (pref), or allow a per-file choice of Current or Original. At time of Plant 3D Model "Save", Record all GUID/OID values for any linked files originating from BIM 360, such that these can be retrieved on-the-fly at next open of the Model. We will need to link in Models from other Sources, that is a fact, and these will not and should not be modified/controlled/restricted by/thru the Plant 3D Program. As always, questions and comments are both encouraged and expected. John Story
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