Starting in January 2026, you can now use Chimpegration to add/update Yes/No (Radio)-based merge fields in Mailchimp and have those Yes/No (Radio)-based merge fields be added/updated to a relevant field in Raiser's Edge
Using either a Mailchimp Data Update process or a Raiser's Edge Data Update process you can add/update a Yes/No value to Raiser's Edge or Mailchimp. To do this, run either of the process mentioned and when you get the Field Mapping step, be sure to map a Yes/No (Radio)-based Merge Field in Mailchimp to the appropriate Yes/No (Radio)-based field in Raiser's Edge.
When running a Mailchimp Data Update process, please consider which NXT source you are going to use. Some Yes/No fields are included as part of standard fields included in Constituent Lists, but they are limited. You will more likely going to need to use a Query to get the right output/field select you need. With this in mind, you will need to have included any relevant Yes/No (Radio)-based fields as an output fields with the Query you are using.