Index tab leaders don't reflect tab leaders in the Index Style

Contex: 700 page word document with multiple indexes - about 1500 index items in each of three indexes

Issue: Indexes appear with dotted tab leaders in front of page number. Index 1 style (and the other levels as well) have a tabs without dotted leaders.

Question: How to get rid of the dotted tab leaders if they don't follow the relevant index style when the index is updated.

Note that I have tried

• clearing the index style
• changing the index style
• creating a clean document with good styles and copying the index definition from that document
• creating a clean document template with good styles and adding that (and activating it) to the document

And numerous other methods that I have not documented.

Any thoughts on how to address this (other than applying the style every time I update)?