By default, dotConnect for MailChimp uses merge tag labels as column names for MailChimp merge tags. You may change this behavior and use merge tag values instead. These are the values in the Put this tag in your content: column on the List fields and *|MERGE|* tags tab in MailChimp list settings.
This can be useful if you have the same merge tag labels but different merge tag values in different MailChimp lists. In this case, such merge tags can be accessed via dotConnect for MailChimp only if this property is set to true. Note that they still cannot be accessed if any other parameters, like types or default values, are diferent for tags with the same names.