What
If a background session was left by one account and Claude Code starts under different credentials, the old session is dropped and a fresh one started with history upload suppressed, rather than being reattached to the wrong account.
Details
- Applies when the stored owner account does not match the current one, and when the stored identity cannot be read at all.
- In the mode that must reattach or fail, this raises a terminal error instead of minting a new session.
- Outcomes are counted under
rc_cross_account_suppressionwith reasons includingtorn_entry_pairandidentity_unreadable.
Evidence
rc_cross_account_suppression
Strings lifted out of the shipped bundle, so the claim above can be checked against them.