Once again, I am just not sure if, from your original post, your ticket is truly a transit or if SVO or LED represent the point of turnaround, the end point of the ticket. If it's the latter, I don't reckon you'll get on the plane for the outbound flight to begin with. But I have seen some itineraries that treat SVO as a transit, such as a routing to IST that I was looking at once, starting in some place like VIE or MUC. Be interested to hear how it goes.