Our plugins have some shared part such as StansAssets/Common folder. That's the only part which should be the same for our core plugins. The best scenario for an update is to import the latest version of the plugin from the Asset Store and reinstall in in your project (Reinstall button click in the plugin settings menu). In general, you should not remove the plugin and then import the new version. You should remove the current version and import the new one only if the versions of the plugins are incompatible. Such cases take places from time to time. You are informed about it via plugin version notes on the Asset Store. So, please, pay your attention to the version notes before an update.