If your asking me how I would handle it I would say keep it simple and leave things as they are especially if it's a work trip plus save your Avios on any considered seperate booking for something better for a future date.

I'm not sure about the duplicate bookings query, perhaps one of the more knowledgeable folks on here will know. However, Euro Traveller is perfectly comfortable for a short flight of just over 2 hours and if your Silver perhaps an exit seat is available? Another possibility is you could ask for at the airport on the day for any upgrade prices

AUP - https://www.flyertalk.com/forum/brit...thread-26.html

If you stay in ET then you may also get 'lucky' with Theoretical Seating, possibly.

https://www.flyertalk.com/forum/brit...ts-status.html