Redmine

Hi!
I have a little problems: It is really impossible to change identifiant of project after create him??

I have create two projects with some sub-project. The identifiant of the parents projects are "project-". To facilitate the sub project creation by the redmine users, i have configure a url link in the welcome page who permit to create a sub-project,
But the identifiant with " - " generate an error in the link : "create a subproject of project-" !

All suggestions are welcome ! I don't want remove my project to generate an other identifiant :(

Regards Nabil.