Normally there is a window pops-up to locate the missed part file in assembly file for the component to complete. What is the option window setting for that?
You're not getting that option there because the Assembly has lost the reference to the Part and doesn't know where it is. It's likely the Part file was either moved or renamed. If you'll click on the Part in the tree and choose the un-suppress icon you should get a Windows Explorer window asking you to locate it, at which point it will show it in the Assembly. Then you'll be able to open it as usual.
Thanks for the help
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