In the following tree, why Parts folder seems to contain hidden parts?
Try to run this macro to see if there any hidden features in your tree: Reveal (display or delete) all feature hidden in the SOLIDWORKS Feature Manager tree
2020 SOLIDWORKS Help - Folder Icons in the FeatureManager Design Tree
Also clicking on the chevron at the top right corner of the Feature Manager will expose the parts visibilty status.
Check if you've any body that in hidden in those parts.
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