Thanks heaps @Jennifer_Dungan , for the tips and advise, noted, and very much appreciated.    Lin

Thank you so much @Jennifer_Dungan , that makes sense, I don't have access to the raw data, I have escalated it to the support to reverse the rules. Such a mess that I made   Many thanks for your explanation.   Cheers Lin

Thanks for the quick reply @Jennifer_Dungan , very much appreciated. I tested it (to reprocess), but I wouldn't be able to get the initial campaign label because they are all different campaign label So, if I use the Regex of   .* and return $0 it will show 'not known' as 'not known' instead of the ...

Hi Jennifer,  Hoping you could assist.  I forgot to deactivated my testing classification rule builder, which then captured and bucketed the data with 6 months lookback window the next day. I deactivated the rule, but noticed the 6 months data that has been bucketed in a new classification 'delivery...