Calculation of EADi(total) for CVA purposes under the standardised method

How should an institution using Mark-to-market Method for calculating the exposure value for CCR purposes calculate an EADi(total) when calculating the own funds requirements for CVA risk under standardised method? How should collateral be taken into account?

EADi total is defined as "the total counterparty credit risk exposure value of counterparty "i" (summed across its netting sets) including the effect of collateral in accordance with the methods set out in Sections 3 to 6 of Title II, Chapter 6 as applicable to the calculation of the own funds requirements for counterparty credit risk for that counterparty. An institution using one of the methods set out in Sections 3 (mark-to-market method) and 4 (original exposure method) of Title II, Chapter 6, may use as EADitotal the fully adjusted exposure value in accordance with Article 223(5). As mark to market method (Section 3 of Title II, Chapter 6) does not specify how to take into account collateral (i.e. what should be reduced "current replacement costs" or "the total exposure value – the sum of the current replacement costs and an add on for the potential future exposure") there is no guidance how to calculate the fully adjusted value of exposure (E*). If an institution uses financial collateral simple method for the purposes of calculating capital requirements for credit risk, can it use the financial collateral Comprehensive Method only for CVA purposes (may an institution calculate E* for CVA purposes)? If not, does that mean that effects of collateral (for CVA purposes – when calculating EADitotal) can only be taken into account if an institution generally uses financial collateral comprehensive method?