How to Enrich HubSpot Data in Clay Without Creating New Columns

New to Clay, just signed up, daft question and I am sure it's very simple. I am importing data from Hubspot, using Clay to clean the data and as a cold CRM for various outreach tools we use. When I enrich data to find missing stuff, how do I set it so Clay can fill in the missing data rather than create new cols? For example, we might have a table with 100 contacts in, 50 of them will have a First Name and Last Name I can enrich the data using various tools such as Linked in, which creates the col and fills int the info, but I want that back in my Hubspot record so I can write it back into Hubspot... does that makes sense?