Why the picture cannot be displayed completely?

I have a picture (Fig.1) which is a line chart and is saved as "*.emf". However, when opening in CorelDRAW X7, one of its pictures cannot be displayed completely(Fig.2). Its line and graphic border is disappeared.

Fig. 1

Fig.2

Could someone help me?


Now, I provided a Google Drive URL to share my file "not_display.zip" (because upload file directly met an error and failed), which contains a *.emf file & a *.pptx file. The *.pptx file is used to generate the *.emf file. 

The URL is : This file