As your business grows, the customers' data is being updated, and some of those updates may happen outside your NetHunt CRM. 

Let’s say, your partners work in Google spreadsheets, while you have your customers database in NetHunt and you want to update it with the new clients' information that your partners have.

So how do you import this new data into already existing records?

Check out this article below! 

https://help.nethunt.com/en/articles/3684927-how-to-import-data-into-existing-records-and-update-them