"Load paragraph styles" or "Load all styles" doesn't overwrite styles with same name
I have a set of 9 template files that I need to update. Each file contains an identical set of about a dozen paragraph styles. I want to update all the paragraph styles in all of the files.
I updated the styles in the first file (correctstyles.ai) and changed kerning from Auto to Optical. When I open the next file, (e.g. SHED-2023-5-simple-columns-narrow.ai), I use "Load Para Styles" and choose the first file (correctstyles.ai). When I check the style definitions, kerning is still set to Auto. The kerning value should have changed to Optical to match the style from the first file. That does not happen.
I've also tried using "Load All Styles" and the result is the same. The styles that are loaded are not replacing the existing styles (all have the same names).
Illustrator v. 27.9.1 on Win 10 Enterprise