Beginning Balances

I am trying to figure out how to import Beginning Balances into X3 for GL accounts, Inventory counts, AP and AR balances and ageing information.  My client wound also like one years worth of monthly GL account balances.  I can't find any Beginning Balance type JEs or Transactions. 

None of this was covered in the X3 Certification classes we took.

My customer is on MAS500 and I am competent at MAS500 at the table level.

Pat