Why is InDesign rasterizing my Illustrator placed files?

I am new to InDesign and have used Illustrator for many years.

I am using the place command in Indesign of an AI file into my InDesign file, but when I do that its like Indesign is rasterizing it or something. I have looked at videos online of people placing AI files in and there's look how it does in AI, but when I do it, the graphic is all screwed.

Is there a reason why it is doing this? Copying and pasting from AI into InD is no problems, it works fine but I need to use place as I will be making changes.

Many thanks for any help!