- * Users and Accounts: Segment aggregates data from Identify and Group events into [Users and Account objects and tables for warehouse destinations](/docs/connections/storage/warehouses/schema/#warehouse-tables)object store records. Any object store records not updated in the last 180 days will be deleted from Segment object store. Any new data after is treated as a new object store record. If the source is connected to a Warehouse destination, object store entities are synced into [`<source>.users` and `<source>.accounts` tables](/docs/connections/storage/warehouses/schema/#warehouse-tables), and the existing record in the warehouse will be replaced with the new object store record, resulting in possible loss of data (attributes). To prevent loss of attributes, Segment advises customers to migrate to using [Profiles Sync](/docs/unify/profiles-sync/overview/), or always send complete Identify / Group calls, or configure backup of the `<source>.users` and `<source>.accounts` tables.
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