Artboard resizes automatically, but unwanted

[Elaine5CC6]

When I save my graphic (in AI Creative Cloud v 25.2.1), and insert in a document, it appears with lots of whitespace around. We have tried to investigate the issue and it seems to be coming from the artboard. When my colleague who uses Illustrator CS6, v.16.0 opens my graphic, she sees the artboard resized MUCH bigger. What is forcing the artboard to resize bigger in older versions and in documentation tools? I've attached an example showing the graphic with the artboards (cropped in my Creative Cloud) and automatically resized bigger in v16.0

Thanks in advance

[kglad]

<moved from cc services>

[Doug A Roberts]

Exactly what kind of file are you opening here?

[Elaine5CC6]

Illustrator

[John Mensinger]

When I save my graphic (in AI Creative Cloud v 25.2.1) . . .

When my colleague who uses Illustrator CS6, v.16.0 opens my graphic . . .

I'm surprised a file saved in 25.2.1 will open at all in 16.0. You can't really draw any conclusions from this exercise.

When I save my graphic (in AI Creative Cloud v 25.2.1), and insert in a document . . .

What is forcing the artboard to resize bigger . . . in documentation tools?

What "documentation tools"?

[Elaine5CC6]

Oxygen

[Ton Frederiks]

What happens if you save your file as CS6 for your colleague who uses CS6?