Doubt about the CSC

Hi,
I've just received my new G935F from Vodafone Spain.
I 'd like to flash the newest Spanish (PHE) stock rom, http://ift.tt/2bjfOMw
I downloaded that version and I got the AP, BL, CP, CSC y HOME files.

But if I flash it I'm going to change the CSC from ATL to PHE and I need the ATL csc to maintain VoLTE coz VoLPTE needs the csc of vodafone.
I saw the newest stock rom from Vodafone has the same security revision than the PHE version.
Here is the Vodafone Rom, http://ift.tt/2bjfs8n

Could I flash with ODIN the AP, BL and CP file of the PHE Rom and the CSC of the ATL Rom? Can I mix this files in order to maintain the ATL csc?

Thanks!

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