I'm looking for a way to replace text (a single word) in many Jira issues at once. I did not found any add-on which seems to be able to do that.
Perhaps it is possible by executing a jelly script? But I don't know jelly much.
I appreciate every hint to accomplish it without manipulating the database. The change history must not be updated.
Edit: The substitution should only be made on issues of a specific project. Additionally I have to consider all text fields (so far summary, description, comment and a custom field).