Vehicle tutorial - Import as rigid mesh


I am following the quite out of date vehicle tutorial on youtube …

I created my own vehicle based on the tutorial,
However, I am struggling to find the “Import rigid mesh” check box under the Skeletal heading. (Old FBX Import UI shown in capture1.jpg and New UI in Capture2.jpg)

any help here would be great.

Man, I was looking for this. Did you find any answer?