I have a revit model with datasmith link connection to twinmotion file. I made some design changes and saved the revit file under a new name. When I updated the datasmith link from TM to the new file name and synced, a whole bunch of walls show up in twinmotion in completely different positions from where they are in the revit model. I've resynced and closed both softwares and tried again with no improvement. Twinmotion and datasmith somehow keeps reading the incorrect positions for some walls and the result is completely unuseable.
It's Revit 2021 with the newest twinmotion and datasmith.
I'm not aware of any known bugs regarding this, so this will require some further investigation. Would you be able to submit a bug report here and share a copy of your Twinmotion and Revit files for our support team to look into this?
I've submitted the bug report with the files, thanks. Sorry it took so long.
I noticed that if I copy the wall in Revit, then delete it and then paste in same place, then sync, it syncs correctly. Obviously that is very tedious as a workaround on a big project but I had little choice to meet my deadline. Anyways it suggests to me there is an issue with the object ID being the same and the geometry not updating and the copy paste probably changes the object ID.
No solution, but when exporting lights from Revit 2023.1 and 2024 with grouping by material, the light positions are wrong in Twinmotion. In my case, they all get bundled up in one location. Not grouping by material resolves this, but of course editing materials in Twinmotion becomes inefficient.
This issue should have been resolved in Twinmotion 2023.1. If you're still experiencing this issue in Twinmotion 2023.1, please submit a bug report here with a copy of the affected Twinmotion and Revit files so our support team can investigate this further.
The issue you mentioned is actually a separate issue. It is a known issue and the developers are currently working on a fix for it.
The workaround you found that avoids the Collapse by Material option on import is what we recommend doing for now until a fix is ready. If you have a small amount of lights, what you can try doing is first importing using a Collapse option that doesn't cause this issue and making note of the coordinates for each light in the XYZ panel. You can then re-import the model using Collapse by Material, then manually move the lights back to their intended coordinates. This can get understandably tedious when working with a large number of lights, but it should allow you to maintain complete accuracy of light placement without losing the benefits of collapsing your model by materials.