Strange index entries

[Pat Christenson]

I'm running FrameMaker 7.2 on Windows XP. I generated an index and  
got some very strange results. Here's a sample and a description of  
what happened.

topic 24-27, 237-240

The index markers are on pages 237 and 240 and not on 24 and 27.  
However, pages 237 and 240 are the 24th and 27th pages of the files.  
Page numbering is set to continue from chapter to chapter.

I regenerated the index and it's fine so this question is purely  
academic.

Any thoughts on what caused this?

Thanks.

Pat Christenson