Foliage went missing on my level.

Hello everyone,

I am designing a level for my project on UE5. The engine was crushed during foliage painting, and when I opened the project back, certain parts of the foliage went missing. And the missing parts were like a specific shape, like a rectangle. I tried removing the landscape and adding a new one, but this didn’t work. Then, I decided to use tools like Erosion, Noise or Hydro. After I used these tools, I could paint back, but the foliage wasn’t as good as it used to be. And still, certain lines can be seen on the level that I can’t fix.

I looked for a solution but couldn’t find anything for it, so I continued painting the level and accepting how it was since this was a prototype. Then, this morning, I opened the project back, and I saw that in other parts of the level, the foliage had gone missing again. I don’t know why this is happening but this is getting frustrating.

How can I fix it guys? Can any of you suggest to me how to find the problem and solve it?

I’ll attach an image of how the foliage looks after I use the erosion tool.

Thank you in advance.

Cheers!