Scale does not work

Hello,
Why do I get such surface when scaling my topographic model by 1 : 1 000 000 ? I changed tolerance, units - nothing helped.

Colud you share this 3dm file?

Here have you the link: MM.zip - Google Drive

It looks fine in Rhino 8,

I found this is a Rhino 6 version 3dm file, I tested it in Rhino 6 and showing as below,

Thanks. It happens sometimes. That’s the problem.

Best regards.