Retail data upgrade - RetailInventTable

Hi

I am looking at the data upgrade process from Ax 2009 to Ax 2012 Retail.

Can anyone explain where in the process the RetailInventTable gets populated. I have tried look at the Ax 2009 Retail pre upgrade xpo and in Ax 2012 retail and I havent been able to establish at what point records in RetailInventTable will be created.

Thanks

Ian