Quote problem

I ever ask about Quote that only show one product on this thread.
http://forums.zoho.com/forumHome.do?forumGroupId=2266000000002001&forumTopicId=2266000000007668&sid=1a728e734be71c9cfe22feed2a69735e

Now I change the style of quote, this situation happen again...Why??
It seems I edit the quote template will lead this error!Can it be avoid???

George