Google Sheets to Mailchimp isn't send out the right data

I’ve got a zap that Adds/Updates a subscriber once it’s been entered into a Sheet row. It mostly works but some critical cells seem to pull the data on the Data In, but not send on on the Data Out. The specific points are birthday and SMS phone number. Has anyone experienced this?

The SMS Phone Number is mapped to a cell with a number, and the birthday is linked to a cell with a date. Both the cells in Sheets have standard sheets format rules applied such as Date and a number format that adds spaces and there’s some light validation on the number cell to make sure there’s 11 digits and it adds a “0” to the beginning of the phone number.