When applying multilevel lists, other text disappears

Hello,

we are migrating from RoboHelp Word to RoboHelp HTML at work. I created a style sheet with multilevel list styles in RoboHelp HTML. Then I imported the HTML pages of the generated RoboHelp for Word version of our project. We have to reapply styles to the lists for all these imported pages.

But I have the following problem: When I click on a list, and indicate the mulitlevel style that should be applied to this list, I see other text disappearing a few lines below.

E.g.:

Before applying the list style (the list has an unrecognised list style of RoboHelp for Word):

"Follow these steps:

     1 first step

     2 second step

     3 third step

Then you have completed the action

and you should be able to logon"

And after applying the list style, soms text has been deleted a few lines further on:

"Follow these steps:

     1. first step

     2. second step

     3. third step

and you should be able to log on"

Did I do something wrong when importing the pages, creating the css, creating the multilevel list style, applying the multilevel list style,... ?

Does anyone have any idea what might be going wrong?

Regards,

Lieselot.