In my map structure, I started to use <topicgroup> with profiling. My chapters are all numbered based on a template derived from the DITA Generator code. This worked nice so far. I understood that <topicgroup> elements do not affect the map structure. In the PDF output this is indeed true, the <topicgroup> element doesn't show up and is not included in the TOC. But all children of the <topicgroup> are counted up one level, thus creating a false numbering.
I expect that the output is like this:
So the children of the <topicgroup> get the wrong chapter depth assigned.
Anyone knows a fix?