Easy way to bulk/ mass updating 100+ rules using replace?

Hi experts,
I have 100+ rules that uses multiple tags (ie. hierarchy of tags) then is later consumed by DevonThink.
I am looking for an easy way to:
1. Mass update tags within the rules? (ie. FY18 now needs to change to FY19)
- ie. do a search and replace on an XML or some file?
2. Is there a way to copy and paste in the tags from rule to rule?
- eg. Is there a delimiter or special character that Hazel uses to break up the tags? (ie like CSV '|', tab, comma etc)
I saw a thread about mass creating rules which is not possible.
https://www.noodlesoft.com/forums/viewtopic.php?f=4&t=5114&p=16383&hilit=mass+create+rules#p16383
I have 100+ rules that uses multiple tags (ie. hierarchy of tags) then is later consumed by DevonThink.
I am looking for an easy way to:
1. Mass update tags within the rules? (ie. FY18 now needs to change to FY19)
- ie. do a search and replace on an XML or some file?
2. Is there a way to copy and paste in the tags from rule to rule?
- eg. Is there a delimiter or special character that Hazel uses to break up the tags? (ie like CSV '|', tab, comma etc)
I saw a thread about mass creating rules which is not possible.
https://www.noodlesoft.com/forums/viewtopic.php?f=4&t=5114&p=16383&hilit=mass+create+rules#p16383