[itsm] change template problem

Hi, I've a problem with the change management module: I can't save change templates. Well, in fact I can. But, the saved templates don't contain anything; They don't contain work orders and conditions for example. Do any of you already have experienced this problem? Am I stupidly missing something? I'm using OTRS 3.1.1 with ITSM 3.1.1. Best regards, Cyrille Bollu