To bulk-assign the "Primary" company label for contacts that are associated with only one company, you should use a multi-object import (Contacts & Companies) and include an Association Label column with the value set to "primary".
Just importing record IDs alone won't update the primary label; HubSpot requires the association label to be included explicitly.
Make sure your file includes:
Contact ID or Email
Company ID or Domain
Association Label (set to “primary”)
Then import it as a Contacts & Companies file. That’ll update the association and mark the company as primary for each contact.
To bulk-assign the "Primary" company label for contacts that are associated with only one company, you should use a multi-object import (Contacts & Companies) and include an Association Label column with the value set to "primary".
Just importing record IDs alone won't update the primary label; HubSpot requires the association label to be included explicitly.
Make sure your file includes:
Contact ID or Email
Company ID or Domain
Association Label (set to “primary”)
Then import it as a Contacts & Companies file. That’ll update the association and mark the company as primary for each contact.
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