Lost Valdo's T17 Map after trading

I traded my friend a Valdo's puzzle box we just got in a map and they unopened it, got the map, and they traded the map back to me. It said trade successful but it was not in either of our inventories afterwards and seems to have disappeared entirely. I have the video recording of everything happening as well.

Edited with video of incident: https://streamable.com/7kcwsl

Never mind, it is safe and sound I am just blind lmao.

I do have the rucksack however there was nothing in it at the time.