Re: (context post by theymos)

After investigating some more, I found that nLockTime requires in-memory transaction replacement to be re-activated for it to be useful.

Code:if (mapNextTx.count(outpoint)) { // Disable replacement feature for now return false;

        // Allow replacing with a newer version of the same transaction
        if (i != 0)
            return false;
        ptxOld = mapNextTx[outpoint].ptx;
        if (!IsNewerThan(*ptxOld))
            return false;
        for (int i = 0; i < vin.size(); i++)
        {
            COutPoint outpoint = vin[i].prevout;
            if (!mapNextTx.count(outpoint) || mapNextTx[outpoint].ptx != ptxOld)
                return false;
        }
        break;