hi, i thought my test file has problem because of changing Ornatrix version for some test.

but it isnt.

I tried Fundamental Fundamental Setting New File, this problem happen again and again.

this happening can't restore with "Ctrl + Z"

Does this problem only happen to me?

*I sent some files to the email with a video, checking please & thank you.

Hi.

 First, thank you for reviewing my answer in detail.

I got your reply, and i tried many times with your answer.

As you said, I am sure about that Hair Cluster Node was the biggest problem.

And the second suggestion you gave me also found a problem.

After pressing "Remeber Roots Positions" on Hair From Guides, it is no problem to render multiple times.
But I turned off A to make a modification, and press it again to finish.
The problem occurs again in the render.
If you turn off "Remeber Roots Positions" on Hair From Guides at this time, you will see the problem in the viewport.

The obvious thing is that if the Cluster node is in the stack, I can immediately see the problem in the viewport through turning ON Remember Roots Positions without having to render it.

So,I conclude that the best way to solve this problem is not using HairClusterNode. (I use Ornatrix v2, not v1)

Is there a new tutorial on "clustering" on the official homepage?

I have not used the Clump node in detail yet,
I don't know the node that contains the functionality of the Hair Cluster.