The last body exchange was the one I posted where Ukraine received the bodies of 909 Ukrainian soldiers, while Russia received the bodies of 43 Russian soldiers.
The second last exchange took place in November of 2024:
https://meduza.io/en/news/2024/11/0...illed-soldiers-return-to-ukraine-37-to-russia
Where Ukraine received the bodies of 562 Ukrainian soldiers and Russia received the bodies of 37 Russian soldiers.
These body exchanges are one of the few points of co-operation between the Russian and Ukrainian side and they are held fairly regularly.
Now part of the reason why the Russians are getting so many Ukrainian bodies is that they are advancing all across the front line. So they are getting into the trenches where the Ukrainian dead are. The Ukrainians are being pushed back across the front line so they have less access to the Russian dead. But still these numbers definitely call into question the claimed 5:1 casualty exchange ratio in the Ukrainian favor.