Currently the offline Data packages for a register are created on the same schedule as the channel DB.
This increases the bandwidth requirements from a store perspective (especially with an RSSU in place).
Allowing a different schedule (data group?) for the offline DB allows flexibility for a retailer to control when offline data updated (e.g. daily), or a on a different schedule to that of the main channel DB.
This is more critical with the introduction of the RSSU, given this will also synchronize to the store.