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Lots of changes on 'save' when nothing has been modified. #7508

@theoryshaw

Description

@theoryshaw

Bug Description

Something very odd is going on.
If you open this .blend file, that's connected to this .ifc file.
And then do a simple save.
You'll see there's a lot that changes.

Diff Report.txt

Image
os: Windows
os_version: 10.0.19045
python_version: 3.11.11
architecture: ('64bit', 'WindowsPE')
machine: AMD64
processor: Intel64 Family 6 Model 158 Stepping 10, GenuineIntel
blender_version: 4.5.2 LTS
bonsai_version: 0.0.0
bonsai_commit_hash: 00bb1ed
bonsai_commit_date: 2025-12-19T12:21:22-06:00

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    Severity:CriticalCrash, data loss, regression, model not loading, cannot install/compile, breaks Blender

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