BUG? Amazon SES Unsubscribe Url Deletes AttributesData Key

In each contact in my contact list I have added valued information in the "AttributesData" key as a String.

I also make use of adding an unsubscribe footer link({{amazonSESUnsubscribeUrl}}) in each of my emails which I am very fond of, until I found an issue. The amazon ses unsubscribe url does it job by changing the contacts topic subscription key from OPT_IN to OPT_OUT and vice versa.

The only issue is that it removes the "AttributesData" and its data completely from the contact. It appears to update the contacts topic subscriptions as it should do, but forgets to keep the "AttributesData" key.

PS: I am not so satisfied you can only create one contact list pr. account, but I will have to live with that until further I guess.