When cached data (e.g., `row.settings`) is used to initialize mutable UI state (forms, editors, draft objects), do not pass cached object references directly. Always deep-clone cached objects on entry to editable state to prevent unintended cache mutations and ensure copied/duplicated initialization is isolated. Example pattern: ```ts const settings = currentRow.settings ? structuredClone(currentRow.settings) : undefined; // use `settings` as initial/editable state const initialValues = { ..., settings, }; ``` If `settings` is nested, prefer `structuredClone` (or an equivalent deep-clone) over shallow spreads to guarantee full isolation.