How do I get rid of a small bump on a runway?

How do I get rid of this bump on the runway? The airport has flatten applied.
There is a polygon with terraforming that covers the airport area. I have
tried adding another polygon with terraforming and I have tried adding a
rectangel with terraforming, nothing seems to resolve the issue. Appreciate
any help :slight_smile:

Runways have a terraforming priority of 10. If you haven’t tried it already,
try increasing the priority of whatever you’ve applied to it to 11 or more and
see if that works. But terraforming is a bit of a messy area at the moment.

Thanks. I have tried adding a polygon with a prioryty of 11 over the affected
area and I think I have achieved a satisfactory result.