As part of the latest Campaign Classic Release 20.3.1 - Build 9228, we fixed an issue in the Update event status technical workflow: to match the sizing of the incoming corresponding fields in the Delivery statistics activity, the sizing of three destination fields in the Update delivery stats activity was changed from 32 to 64 bits.
Learn more about the Update event status workflow in this section here: Update event status technical workflow
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.
Sukrity Wadhwa