OnTap 9.5p5 rename svm netbios name

We're running OnTap 9.5p5 and we want to modify the cifs name (netbios) of an existing svm after transferring data from a 7-mode system.  Are we able to do this without deletion of existing shares on the svm?  For instance 7-mode system cifs name is A1, we transition data from A1 to svm cifs name B1, after data migration we delete svm cifs name B1 and recreate it as A1.