Requirement: https://studio.atlassian.com/wiki/display/JST/Studio+Importer+Plugin?focusedCommentId=37683851#comment-37683851

A new step (user interaction) should be added to the Data Importer in order to be able to consolidate/rename user(name)s. Probably the best way would be to add that functionality after the findOldJiraUrls()/updateJiraUrls(String) step (https://studio.atlassian.com/wiki/display/JST/Studio+Importer#StudioImporter-SequenceDiagram).

The consolidate/rename user screen should provide some server- and/or client-side batch support. F.e. selecting several users for a renaming after a certain regex or common patterns like lastname.firstname to firstname.lastname. Please ask mknight for further input on the functionality which to be provided.