Redmine

We are using Redmine for the development of applications on different mobile platforms (iOS, Android, J2ME, ...)
For each platform we made a subproject.

Now, I would like to copy an issue to several subprojects (e.g., copy the issue to the iOS, Android and J2ME subprojects). Now we have to do this manually.

Is it possible to copy the issue to other subprojects with 1 action?

Or is this way of working (making a subproject for each mobile platform) not the correct one?

Thanks in advance,
Frederic.