See this tutorial for the easiest way to export JIRA users to Excel: http://www.midori-global.com/products/jira-better-excel-plugin/documentation/user-export
(Excel allows you to filter, search, post-process your user account data easily.)
I found 2 ways:
Can you let me know what version of JIRA you are using? I would like to see if I can reproduce the unwanted line breaks.
The export limitation is based on the search results. If you limit the search to show 100 per page, then that is all the add-on will work with. All you need to do is set it to 10,000+ and it will export everyone.
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