Despite the drive to avoid local formatting in favour of styles, in the case of separate lists you do need local formatting to force subsequent lists to restart. You do this by right clicking on the first para and choosing 'Restart at 1".

Having said that it is 'actually' possible to change the list behaviour to ensure each separate list begins with a restart. This is done by making the list an outline list and assigning the first level to be linked to a style that always appears between lists such as 'Normal' or 'Body Text'. The second level then is configured to restart after higher levels and would be linked to the 'Body Numbered' style you describe. By doing this, you can simply have at least one para of the top level sitting between 'lists' in order to restart the second one.

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Andrew Lockton
Chrysalis Design, Melbourne Australia