Uhh, I did not read your answer properly. No update needed
I've just tested it on a other domain (not on my server) and changing slug works. Thanks for figuring out my problem.
** EDIT **
But is on GS 3.2.3, so I do update to 3.3.1 and try it again
I've just tested it on a other domain (not on my server) and changing slug works. Thanks for figuring out my problem.
** EDIT **
But is on GS 3.2.3, so I do update to 3.3.1 and try it again