Best practice to enter current data and backlog data in parallel?

Hi All,

We are going to transfer manual data into the system. We are planned to start current entries in the system and in parallel enter the backlog data.

E.g. July is the start of the fiscal year and we start entering data from Jul-2019 to onward. And in parallel want to enter the backlog data (from Jan-2018 to Jun-2018 and from Jul-2018 to Jun-2019). One team will handle current data entry (i.e. from Jul-2019 to onward) and another team will handle the backlog data (i.e. from Jan-2018 to Jun-2018 and from Jul-2018 to Jun-2019).

Now, may we create 2 operating units with same name for current and backlog data entry? And merge both once the backlog data entry is finished.