Usage of datasource 0CO_OM_CCA_9 in delta mode + no 2h-safety interval possible?

Dear experts,

we would like to use 0CO_OM_CCA_9 as delta loads plus we want to load most recent postings from source system.

• To get most recent postings we have implemented note 553561, that basically switches off the 2h safety interval. This note 553561 says it can only be used with "ODS object that is operated in the mode Overwrite"
• On the other hand documentation on 0CO_OM_CCA_9 says the delta mode is of type "Additive extraction"

How does this work together? Is it possible at all?

At the moment we have "additive" in the transformation to DSO an we are getting some double and triple values that may be a result of these two effects.

Best regards Gregor