Hi Qazim,
3-4 years ago, both Serbia and Kosovo community synced in Telegram chat and agreed on borders. Kosovo has its own set and Serbia has cadastre data too. Borders are mostly the same, but where they were different, we split them and added tags "claimed_administrative" and "according_to". Both communities agreed on proposals and this is how we keep them. I will mention this change in Kosovo telegram group (https://t.me/osmkosovo - feel free to drop by there to discuss if you want), but if you don't mind, I would like to revert this changeset, to keep previous borders. Ok?