Retraction of secondary accounts into CCA

Hi all,

In a current project we are facing a situation where we have an existing allocations mechanism built on BW/BPS/ABAP, with primary and secondary costs being calculated and stored in BW. Now we have a requirement to retract all these costs (= primary and secondary) down to CCA.

I have seen that the standard retraction is only made for primary costs, whereas secondary costs are blocked. I also have seen workarounds, like changing the account category temporarily. What would be the problem of developing such workarounds in your opinion/experience? What is the reason for not retracting secondary accounts in standard CCA retractions? Do I miss a pitfall?

Many thanks in advance!

Andreas