A new permanent cookie, nllastdelid, has been introduced as part of the latest Release 20.3.1 - Build 9228 .
This cookie (other than UUID230) will store deliveryId. When session cookie is not present, broadlog information would be taken from the deliveryId present in this cookie. This change fixes an issue which occurred when the browser session was over: the session cookie containing deliveryId and broadlogId got deleted. Without deliveryId, broadlog information could not be found and the tracking table information would be missing in case of permanent tracking (last delivery).
In case you have any questions, please feel free to post them below or reach out through the community Q and A section. In case you have any ideas and/or suggestions regarding the Campaign Classic product, then kindly submit them here.