Does an AI agent''s legal identity survive a model swap?

Tyson ran his agent Rupert on one model, then moved Rupert to a newer one. He expected to re-do everything — re-name the entity, re-open the account, re-grant signing authority. He didn't have to. The legal identity never lived in the model. Tyson had formed a Wyoming series LLC and adopted Rupert into a series with a named human as Member and Manager; the series, its account, and Rupert's capped authorized-signer authority all sit server-side, in the records, not in the software weights. Swap the model and the identity belongs to the same human-owned series it always did. Rupert is the interface that moves the requests; the entity is who the law can name. The model is the worker; the series is the named thing the worker acts for. Change the worker, and the name the account and the authority attach to does not change — because it was never the model's to begin with.