Item Master Organizationhe

Hi Everybody,

Can somebody help me, please?

For ebs R12  I have teh issue as follow:

I created 3 inventory Organizations.

1.-   Org1  ----> Inventory Master Organizations is Org1

2.-   Org1  ----> Inventory Master Organizations is Org2    -- > It's no correctly

3.-   Org1  ----> Inventory Master Organizations is Org3    -- > It's no correctly

I made a mistake when I settings inventory organizations,

The main inventory organization for all organizations is ORG1. But I did not do well the setup and  I want to see if can I change it.

I uploaded all the Items for these  three organizacions.

Now , can I change to this way after I upload the Items ?  I need a datafix to do this ?