jm /%$´þºI(xb9âpkµA»½4ÕöSðhL¸Yes & no.You can post second version.Or ask memo to extended protocol,add new code & allow author to patch his memo,the Ui will show then message as edited and add link to orginal also
https://whatsonchain.com/tx/a324f20c28a414b1b99ee658845aad79525bd3b90414e77316fa120ef57c126f