Problem with RH10 mapping to default topic

I am having trouble understanding the mapping that RH10 does to display to topic I identify as my default topic. I've studied the source code of index.htm and whnjs.htm to understand how it is supposed to work.

When I publish my project, whnjs.htm maps to my default topic but index.htm doesn’t map to whnjs.htm. As a result, my generated project NEVER launches my default topic even though it displays correctly when previewed in the Generate function.

When I asked the Adobe support tech to explain how this was suppsoed to work, he said that "someone smarter than me" would understand how.

Unfortunately, I am the smartest guy I have access to, so I'd like to escalate this issue to someone who 1) understands how it works and 2) is willing to pass the knowledge along to me.

Thank you!