Have two flights booked XXX-LHR next week, same day, one afternoon one evening (company policy is cheapest Y intra-Europe, so sometimes you throw away tickets).

Now looks like I *might* just make the earlier one - will I have any problems if I OLCI for both, and then don't make the first one ? [both tickets are straight one-ways, no problems with nested tickets or throwaway returns].

did try a search but nothing obvious.