SW 2014, with current version of Adobe Illustrator. In a SW drawing, I can Insert Object > adobe acrobat > from file, (optionally link)

It appears in the drawing, I can position it and size the box it appears in.

However, this seems to only clip/unclip the PDF display, rather than changing the scale of the PDF.

But the scale/relative size of the PDF seems to change as I zoom in and out from the drawing.

This seems quite odd. How can I lock its scale/size?

Thanks

Jay