Hi Laurynas,
If you make a project version (snapshot) of a project, no ECP planning data are get created.
'Versioned ECP values are stored in tables: VSPROJ_CN, VSPRPS_CN, RPSCO' => It is not accurate, actually it is the versioned project structure and costs data, but not the ECP.
And I do think. the CJ9FS copy the costs only too, not the planning data.
ECP is a planning tool (data stored in CKHS CKIS), it results the costs data (COSS, COSP & RPSCO). For the costs point of view, it does not care, which planning tool is used.
If a project is transfered to a Simulation (not the snapshot), the simulation get new copied ECP. The structure element (VSPRPS_CN-kalnr linked with a new kalkulation number). The copied ECP data (CKHS & CKIS) are stored with the new kalnr.
There is also ECP multiple CO-Version avaiable (using PRECP2 to link with multiple kalnr for the same WBS element\activity) , but it has nothing to do with project version.
Kind regards,
Zhenbo