Splitter problem with conditional-split elements

[polypunkt]

In my example there are some h1 elements that are splitted at. Additionally two paragraphs containing the class »TOC1« contain contents that shall be displayed in NCX. I wanted to allow a conditional split on those. If I use the conditional-split element in the heading-conf.xml, the hierarchy level in NCX becomes lower than if I use the unconditional-split element.
At first I thought there was a problem with concurrent classes because another class (»abgesenkt«) that is defined as conditional-split also occurs on the mentioned paras. But that didn't seem to be the problem.

https://subversion.le-tex.de/customers/hanser/bel/content/hanser/CHV/26009/tei