No, absolutely not. Your folder structure for a merged WebHelp project should be as seen below. Are you generating the children properly?
Father (including Father wh* folders)
Child 1 (including Child 1 wh* folders)
Child 2 (including Child 2 wh* folders)
Child 3 (including Child 3 wh* folders)
Actually I'm not using the Merged Project because that way I have to display the TOC of the child project. For my project that is not possible,
in my TOC files should be viewed as follows:IntroductionTopic Child Project 1 Introduction
Topic Child Project 2 Introduction
Topic Child Project 3 Introduction
DevelopmentTopic Child Project 1 DevelopmentTopic Child Project 2 Development
Topic Child Project 3 DevelopmentItem 3
Item 3 Project 1Item 3 Project 2
...If when using the Merged Project had a way to change the TOC my problem would be solved. In fact we had to separate a large project into several smaller projects because the glossary of terms Robohelp does not support duplicated.
You have an introduction with multiple child projects and development with multiple child projects. That looks like you are trying to merged various merged projects which cannot be done
Do you really need multiple projects for just an introduction? Multiple topics yes but multiple projects seems excessive.
If you follow the method of merging described on my site and also outlined by Leon, using just one merge as in your first post, then RoboHelp will create one search for the parent project and the child projects.
See www.grainge.org for RoboHelp and Authoring tips