I don't know how this happened but I have components in linear arrays and subcomponents etc that have components that hidden here and there.
Is there a way to tell SW to unblank or UnHide all components.
Right-click on the name of the assembly at the top of the tree, and choose "Show with Dependents" from the drop-down.
Are yiou sure they're hidden and not suprressed?
SW2013 has a bug where files opened from a previous release will pattern instances suppressed (the component pattern feature won't be however)
It's supposed to be fixed in SP3
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