Request for Help: Writing Enriched Data Back to Original Table

Hello Clay ppl-- can someone help with a quick write to table request? I wrote contact data to another table, and deduped by company name. I then enriched with new columns. I want to send the new columns back to the original table and populate 'one to many' -- so in other words, I want all contacts from the same company to get the new enriched columns. I've done this in the past, but forgot the process. I've also googled this, looked on YT, Clay support. All I am finding is basic write to table re: sending lists over-- not how to write back to original table to populate your enriched columns across all contacts with a similar variable. Any help here? Thanks!