hello, as i known, the license is binding relation with the WWN of FC switch. the WWN and license are unique.
but for your requirement, you can try to contact brocade, to transfer the original license to the new equipment. here is the official introduction of Huawei.
http://support.huawei.com/enterprise/en/doc/EDOC1000109017?idPath=7919749|7941815|21430818|21462744|8598998