Change Profit indicator

Question

PS Experts,
Please guide me on the following case,
I have a customer project started 5 months ago with
RA Type (e) Revenue-Based Results Analysis
Profit Indicator (M) With Profit Realization
Actual cost incurred , No billing to customer
During the periods end closing through tcodes KKA2 & CJ88 the system performs WIP and posted in FI
This month my customer asks to change the Profit Indicator to be (Q) Percentage-of-Completion
I tried to do these changes and i made change in CJ20N in RA KEY and run KKA2 & CJ88 the result is that the system performs Sales in Excess but it keeps the old WIP and didn't delete them
My questions are
Is that right to change the valuation method in one project during its life
How does the system perform Sales in Excess/Bill in Excess while WIP( Work in progress) already performed and didn't automatically delete the WIP
Does it mean that a manual entry is needed to delete the WIP
Thanks

Answer 1

it is not a good practive to change RA method in the life cycle of its project
having said that if the change is relatively imple like changing Cost based POC to REv based POC then there would be no prblems as all the accruals and deferrals would readjust based on the new method
even with Q I would have assumed that this would be no issue - have you maintained the POC using statistical key figures??
if you need to do this with effect from previous month then you have to undo settlement and then recalculate RA and the settle again as explained by Paul