Investment Measure AUC to IM AUC transfer

Hi,

we need to transfer cost from AUC to AUC which already settled to AUC.

WBS1     AUC1     settled to AUC 200

now we are not able to reverse as some cost has been settled to FA. now we need to transfer these cost of AUC to new AUC which is created for new WBS.

i am not able to transfer this using ABUMN.

if i use KB11N system will transfer cost WBS to WBS so after settlement of new WBS it shows cost in both AUC.

Please let me know if there is any other way to transfer cost of AUC to another AUC which is investment measure.

thanks

Sunil