Destroyed forest when adding an inner border

Help and support
1

I tried to fix the borders of some grassland inside a forest. And I failed.
The place is here: Query Features | OpenStreetMap

Around the place called VAIS-torpet is grassland on both sides of the cycle way. The place is completely sorrounded by woods. But after fixing the borders and adding the new relation for the inner border of the woods the comlete forest does not display any more.

Could you help me with fixing this? What is wrong? Thank you very much!

2

I’m not sure but the problem could be you created two grass areas directly connected to each other as a MP (both with the role outer) being the inner inside the forest MP. Two connected areas are not supported as MP as far as I know. Try to combine these 2 areas to 1 only, maybe this will solve the problem.

3

Thank you very much. The two grassland polygons that touched each other have been the problem. I joined them to one and corrected also the boundaries of the second. Now it displays correctly again.