What you want is basically this feature request 
: https://forum.knime.com/t/search-a-node-in-a-knime-workflow-by-id-goto-focus-a-node-by-id/14495/2 by @andres_sommerh. I don’t think it has been implemented already, so we will have to wait until it appears in a future version of Knime. Until then, I think your best bet is to search the workflow directory tree from your OS’s file browser or shell window.
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