Mailchimp data not getting synced from Sage

Hello,

We are working on Sage 7.3b and attempting to use the Mailchimp integration. I did the following steps:

1) Created a dynamic group in Sage of people whose company status = 'Qualified' using the Person Entity and the Person Group view.

2) Sent the data over to Mailchimp.

3) Created the Mailchimp campaign (in Sage) and sent the email campaign from Mailchimp.

Everything worked great, communications were created, the campaign results stats are coming in from Mailchimp to Sage, etc.

However, I would have expected that as new companies get added in Sage with company status = 'Qualified' and/or existing records in the group get their company status changed to something other than Qualified, that those changes would get reflected in Mailchimp. In other words, as records get added or removed from the group, they should likewise be added or removed in the corresponding Mailchimp Segment. But they are not, despite my group being dynamic.

Is this a bug or does that functionality not exist yet?

Thanks,
~Cheryl