Revit Imports Unresolved

[Share1at35]

Hello All,

Part of my job involves importing Revit models from clients so we can use them as a reference.

The problem is every time a model with more than 1 Revit import is opened, it will throw and error that it has resolved one of the imports to an import of exactly the same name.

The error says (parts not actually stated in the error is in brackets):

"(Assembly file path).iam has reference to (assembly file path)*LocalDocs*xAaaaau*(Import file name).iam. 

It has been resolved to (assembly file path)*LocalDocs*xAaaaau*(Import file name).iam. (This being the same file path as what was originally referenced)

which is not the same file as originally referenced. Most likely, all of the cross document relationships will fail to connect! Do you really want to use the resolved document?" 

And the message has the options Yes, No and Prompts.

Basically it says "it is the same file, but it isn't the same file, capisce?"

The problem is that if you press Yes, the assembly opens as normal and you instantly notice that the 'resolved' file has been completely replaced by another import, an import that is already imported. So I have to press No, which it then warns that "Inventor works with unresolved files", find the unresolved import, delete it and re-import it.

When the model is saved and closed, no issues arise. When reopened, same issue again, this time for a different Revit import.

The revit imports are large, however we try to improve performance as much as possible by hiding elements we don't need. Also, the Revit models have not been changed in the time the Inventor model is closed.

I don't think the main assembly is corrupted, as it can be referenced to other areas and saved without any issues whatsoever.

Not sure if it is a Revit Worksharing issue, because these models have been supplied to us as workshared. The issue still occurs if the Revit model has been detached and the worksets deleted. I've even gone and deleted all the revit model's linked models, so it has no missing links. Whatever I do, the issue still persists.
The issue never arises when there is only one revit import in the assembly, it only comes up when there is two or more.

[johnsonshiue]

Hi! The behavior does not sound right to me. There could be some sort of corruption. If you import the Revit file to a new Inventor file, does it still happen? Have you reported to Autodesk Product Support? If not, please report it to the support team.

Many thanks!

[James_Willo]

Hi, does it make a difference if the RVT files are in the Inventor workspace location?
Is the file being replaced by one with the same name or a completely different name?

I know that if I import any type of file, if they have the same name it will import the same data for both even if I chose multibody for one and assembly for another. 

[harland.jU5ZCW]

Hello James,
The RVT files are already in the inventor workspace,
and the file is replaced by one of completely different name.

[harland.jU5ZCW]

Hello Johnson,
We've imported both Revit files into a new assembly file, and the issue appears non-existent!
From this, I guess the issue is hidden in the original Inventor assembly itself...

If you're wondering who I am, I work in the same company of the one who posted the original message....

[Share1at35]

Hello Johnson,
We thought it was gone for a moment, and jumped to conclusions...
The two Revit imports in the same assembly worked when there was nothing else in the assembly. We've placed a new part alongside these imports, and the issue has resurfaced.

[johnsonshiue]

Hi! I think we will have to see a reproducible case. Are Inventor and Revit files stored on a shared network drive or a cloud drive?

Many thanks!

[James_Willo]

Also I just wondered if you had logged this with customer support? Do you have a case number for me so I can track it internally and get it more visibility?

Thank you

[paul.colemanCHT7Z]

Hi, was this issue resolved? We are having the exact same problem.

[johnsonshiue]

Hi Paul,

I don't recall we have received the files and reproducible steps. If you have any further information on how to reproduce the issue, please let me know asap (johnson.shiue@autodesk.com).

Many thanks!

[paul.colemanCHT7Z]

Hi Johnson

We use Autodesk Vault and Inventor within the organisation. We are looking to use Revit for all of the structural platforms within our factory designs as Inventor is for obvious reasons not aimed at this design type work.

In saying this we still need to reference in the structure from Revit into Inventor to produce General Arrangement drawings. I'm testing Revit in Vault and Docs and importing (AnyCAD reference) the structure into Inventor. The problems seem to occur after we make changes to the Revit model, and if I "last save" the Revit model in "Fine" visual setting with the connections visible. If I save the model in "Medium" visual setting not showing the connections, when we update the AnyCAD reference in Inventor it seems to be ok.

At this stage we are trying to show less detail in our General Arrangement models for downstream collaboration with VR. So having the connections in Inventor may not be an issue at this stage.

However, we still would like Autodesk to fix this issue as we may still want the connections visible in Inventor, and we simplify it within Inventor.

Thanks Paul

[rena_andrews]

Hi @Share1at35 and @harland.jU5ZCW, I'm curious if you're still dealing with this issue? I tried to reproduce the issue from scratch by saving two sample RVT files as Workshared models (I tried the same process with both 'local' and cloud Workshared models). Note, I did not take the extra steps to detach from central or delete worksets, etc. I then imported both of these RVT's by reference into the same Inventor assembly and didn't see any of the file resolution dialogs you mentioned, so I tried saving, closing and re-opening the files, again with no issue. I also placed some additional inventor parts into these files as mentioned in another comment, but still didn't reproduce the issue. Let me know if I'm missing any key steps here, but it appears either the issue has been fixed or it's a model specific issue.. If you're still experiencing this, can you share the files and any additional info (such as Revit/Inventor versions being used) with me directly via e.g. a OneDrive link through a private message, or open a support ticket and share the case number with me? (Whichever you prefer). Thanks!

Hi @paul.colemanCHT7Z , please correct me if I'm wrong, but it sounds like this is a separate issue from the original post about unnecessary file resolution dialogs causing issues when importing two+ workshared RVT models by reference into an Inventor assembly. To clarify, the issue is about losing connection geometry/visibility when updating an associatively imported RVT from a Medium to a Fine level of detail, correct? (Potentially specifically when importing the RVT file from Vault or Docs)? I would like to confirm with you first, but I think I see the issue without using Vault or Docs, which would be helpful to narrow down the root cause if so.

Here's what I did: I created a RVT with some structural beams/columns and added some structural connections. I saved a copy of this file, one with Medium level of detail (LOD) and one with Fine. I imported both by reference into Inventor. As expected, the Fine LOD connection geometry was visible and the medium was not. But I think the issue you're describing is when I went back to Revit and updated the LOD from Medium to Fine, then updated the Inventor assembly with the RVT reference. The resulting connection geometry did not look right on update. I did however find a workaround to this issue. If you Edit Import on the RVT reference and deselect structural connections > OK, then repeat the process but this time include the connections again, I was able to view the connection geometry as expected again. I created a defect to investigate this issue (INVGEN-87218), but can you confirm if this is the same issue you're dealing with in case I'm missing anything? If so, does the workaround also work for you while we work on an underlying fix? 

Thanks very much in advance!

Best,

-Rena

[paul.colemanCHT7Z]

Thanks @rena_andrews, yes you are correct. My issue is about losing geometry when updating an already existing referenced Revit file in Inventor. If we have the Revit visual display on fine this is when issues occur with missing geometry in Inventor after running the update button in inventor. We are already using the workaround for the time being and thanks for confirming this option. But ideally this is fixed as soon as possible.

Regards

Paul

[rena_andrews]

Thank you for confirming @paul.colemanCHT7Z! You probably saw that I updated my previous comment, but I have created a defect to investigate and fix the issue (INVGEN-87218), really appreciate you reporting it to us.

Take care,

-Rena

[harland.jU5ZCW]

Hello @rena_andrews,

Unfortunately we never got to the root cause of the issue, the project that the issue was occurring on was closed out some time ago.

One work-around we did find was by importing the Revit model as a multi-body part; we were able to side-step the problem completely. It does mean that the imported files cannot be updated in Inventor after being updated in Revit, but an advantage we found was that multi-body part imports significantly improved performance over the original method.

[SharkDesign]

I'm not sure if this is relevant or not, but in either 2025 or 2026, the intermediate translation extension was changed. Older versions used DWG and this could in some cases cause loss of geometry. I'm not sure if this could be that the fine detail is being lost through passing it through DWG.

Also the extra fine detail could be of a different type of geometry like mesh which I'm not sure how that is handled on translation.