Hi @Artem Taranenko I tried to build many. All of them failed to do simple things :( The only thing I was able to accomplish so far is to write an SOW from Jira tasks.
What's your preferred way of work? Especially for work or Atlassian Jira, when you inherit it all from prior colleagues. :) You like to set up everything anew and customize from there, or you rather organise, cleanup and optimise the inherited "mess"? :)
Migrating to a new site is not always an option. I usually opt to clean-up or stand-up a new project and migrate work items into it. With some effort, Jira can be cleaned-up to be exactly the same as it was out of box.