Change table prefix of existing site with plugins

Hi,

I’m going to implement some e-commerce on my existing WordPress site using Shopp (www.shopplugin.net), which has worked well so far on a private test site. But before launching the store, I want to change the db table prefixes on the live site from wp_ (I know I should have done this in the first place for security’s sake)

I’ve taken these steps (thanks to Sherif Elsisi https://tinyurl.com/ytjpe7):

1. Change $table_prefix in wp-config.php
2. Change db table names, including tables created by plugins
3. Edit wp_options and wp_usermeta

It worked for the core WordPress stuff, but not for some of my plugins. Is there anything I can do besides deleting and then reinstalling the plugins?