You have a System Center 2012 Configuration Manager environment. During an operating system deployment to a specific computer, you need to ensure that all user state data is migrated to a new…

A user state restore task only handles the restoration phase and cannot establish a link between source and destination computers on its own.

The 'Customize how user profiles are restored' option controls profile handling behavior during restoration and does not associate a source computer with a destination computer.

A computer association explicitly maps a source computer to a destination computer, which is required for SCCM to know where to capture user state from and where to restore it to during a replace scenario. Without this association, the task sequence has no way to correlate the captured state store with the new target computer. You create the association in the SCCM console and it is referenced automatically by the capture and restore task sequence steps.

MigSys.xml is a USMT configuration file that controls which system settings are included in migration but does not define or manage computer-to-computer transfer relationships.