Why parts are disappearing in SolidWorks Assembly?

I think it's a virus or something.
At first it was only one assembly
Once I did all the final assembly of it infected all files 1 master assembly 8-9 sub assembly.
What is curious the part files are good.
Please help me!!!!
It is one month of worck

Answer
 
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5 Answers

nothing to worry about it is just a way to get better perfomance with large assemblies

 
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Open the part file and then right click on feature tree>hidden tree items>solid bodies> show solid body

 
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Are you referring to the feather on the part file? All that means is your parts are loaded as lightweight in the assembly. Right click on the top level assembly in and select "Set lightweight to Resolved". Also check when you are opening the assembly file that lightweight check box is unchecked.

Hope this helps!

 
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Thank you very much
I was scared that should make it once more

 
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Hi, I have a similar problem.today this problem occurred
please help me
in the large assembly mode, all parts appears!why?

 
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