Thank you for reaching out to the Community regarding your issue, although I am sorry to hear that you are experiencing issues with your 401k. I have a couple of questions to start here. How do you download your transactions? Do you download them directly through Quicken or do you import the file from your bank then import it to Quicken? Is this the first time this has happened as well? What FI is having the issue? Have any other accounts had similar issues from this FI or was it just this particular account. All these should help us better identify what exactly could be causing the issue you're having.
Once you get a chance please let us know more. From there we'll better understand our next steps/options.
Thanks,
Quicken Francisco