Unclear It is not known what condition decides whether this saving and restoring happens for you.
What
MCP servers are outside programs that give Claude Code extra tools. When you switch one off, Claude Code now saves the list of switched-off servers with the session's internal details. When a remote worker (a copy of Claude Code running the session on another machine) resumes the session, it switches those servers off again. Before, this list was not saved.
Why
Servers you turned off stay off after a resume instead of coming back on.
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The writer flagged doubt
It is not known what condition decides whether this saving and restoring happens for you.