RoboHelp 2022: Child projects are not showing TOC in master project output

I have a master project that is linking to child projects.

Outputs for master and all child projects use a Frameless preset. However, the skin has different settings for the TOC.
- Output for Master has no toc. We don't need a global TOC for the master project output.
- Outputs for child projects have TOC

When trying to display a child project in the Master output (after copying outputs to the Merged folder), the TOC does not appear.
Could anyone provide me with some insight in getting each child project TOCs to appear in the merged project output?

Thanks in advance,