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Updating a contact through Zapier or API doesn't overwrite all empty fields

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From the API documentation:ย Constant Contact v3 API

"When updating any resource using PUT, all properties are updated, overwriting all previous values."

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Also in Zapierย 

From Zapier

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Would be great if only selected properties are updated, leaving the others intact.

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1 reply

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๐Ÿ—“๏ธ January 29, 2026 | 2:00 pm ET