🚀 go-pugleaf

Here's a problem with generating an index in the format I want in FrameMaker
5.5.6. I haven't seen any reference to this being a known bug, which is why
I'm asking here.

I have a book split into chapters (chapter I, II, III etc). The page numbering
in the chapters starts at 1 for each chapter. Therefore, in the index, I need to
have page numbers displayed as II-32, for example. For this, I use in the index
reference page, <$paranumonly[ChapterTitle]> - <$pagenum>.

This is ok, until I have figures or bulleted lists, in which case the index picks
up _their_ numbering, not that of the chapter. It seems that FrameMaker is picking
up the numbering of the first previous numbered paragraph it finds, regardless of
whether it is of the correct type (ChapterTitle).

Am I doing something wrong, or is this a bug, in which case, is there a known
workaround?

Thanks,
Iain