Unclear It is not known when Claude Code moves the settings rather than deleting them.
What
When Claude Code clears a plugin's options, it can now move them to a different name instead of deleting them. This covers the plugin's saved pluginConfigs, the answers you gave its configuration dialog, and its secrets. Before, these were always deleted. The check that looks for leftover settings belonging to no plugin now skips some names.
Why
Your plugin settings may survive when a plugin is renamed.
Names in the bundlepluginConfigs
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubt
It is not known when Claude Code moves the settings rather than deleting them.
Anthropic's release notes agree
[VSCode] Fixed a plugin's permission request showing a name with hidden characters: it now reads "a plugin"