Organisation restructure and Balance carryforward

Hi,

We use consolidated profit centre and company for consolidation and reporting. SAP(ECC) profit centres are mapped to consolidated profit centres. Mutliple ECC profit centre map to one BCS consolidated profit centre. From fiscal period 01 2013(July 2012) we are restructuring our organisation and we will have different ECC to Conspc mapping from fiscal year 2013.

So when I run balance carryforward in BCS in period 01 2013, opening balances will be carried forward to period 00 as per the old mapping. My question is what will happen to the opening balance in BCS when i upload data from ECC in period 01 with new mapping. I understand that upload from ECC in period 01 gets both period 00(opening balance) and actual values posted in period 01. Will opening balance in the old conspc be reversed in period 00? or will it reverse in period 01.

This has implications on our cashflow reporting as we use period 00 values as opening balance. So any reversal in period 01 will not be reflected in reporting..

kindly advise

Umang