Materials Randomly Get Wiped Out

Hey, I’ve been working on a huge town exported as an FBX out of Revit LT for about 6 months. I’ve been able to simply hit reload whenever I’ve made changes to the base model. For some reason, this time when I reload the FBX all the materials come in as blank default ones named “proxy_model…” I have over 50 materials, so it’s a pain to reassign them…any ideas?

Some other annoying things that also happen on the reload:
-half of my materials are randomly purged out of my library
-any material with () in the name are renamed with _

I hate this kind of unexpected stuff - what the heck?

Hey there @Jeeferoo! Does the texture import issue happen when you import them fresh into a new project as well? The naming convention changes are likely due to allowed characters for cross platform file system requirements.

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Hey, thanks for the swift response.

looks like the naming change happened sometime earlier and I only noticed now.

The materials default on a new file too, but I think that’s a limitation of Revit LT FBX Export function - Autodesk stripped materials out of it.

I’ve resolved the issue by:
-Getting an old backup version and loading my new FBX into it - everything came in fine without any losses.
-In my newest TM file, deleting everything except for my latest changes, saving
-Opening up the backup and merging in the purged new file

Lesson learned - always keep backups

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