Why when I hide the conditional text I created, why does framemaker hide everything in the chapter, even things that were not tagged as conditional?

I have a chapter of a user manual that has information from two versions, version 9.2 and version 10.0. I created conditional tags for both 9.2 and 10.0 and applied them to the appropriate text. When everything was tagged, I hid the 9.2 conditional text and instead of just that text disappearing, the entire chapter disappeared. When I un-hid the 9.2 conditional text, everything returned. The 10.0 conditional text when hidden did not do this. So, I went back and created a "NEW_9.2" conditional tag and applied it to all of the old 9.2 text. After changing each page, I tested the show/hide conditional text function and after each page, only the NEW_9.2 text became hidden. When all pages had the old 9.2 conditional text changed to NEW_9.2, I saved the document. Then when I went to hide the NEW_9.2 text, the whole chapter disappeared again. Un-hiding the NEW_9.2 brings it back. This time, if I hide the 10.0 text, the entire chapter disappears as well. What is going on with this? Other conditional text (such as the DRAFT watermark) does not exhibit this behavior when hidden.