are you familar with SQL or have a DBA around? It’s quite easy to delete these JIDs using SQL statements.
You may want to restart Openfire afterwards to make sure that it refreshes the database cache (or select the user cache and purge it within the Openfire web gui).
I wonder if editing a dump and then import it again would be a more safe options for you.
Select does just display things:
select * from “jiveUser” where “username” like ‘% %’;
This should display the users with a ’ ’ character. Make sure that this command works fine, if it returns an error or too much results do not continue.
For MySQL you may need to use ’ instead of , no quotes or vice versa, I have no idea.
To delete them use:
delete from “jiveUser” where “username” like ‘% %’;