Based on your screen shots, I'm not sure where you are experiencing the problem. The enlarged model appears intact. Please explain what problem you have with the enlarged model and also what final scale you intent to print.

I've attached your screen shots to my post here to make things easier for other users. Your dropbox links merged together. It's always easier to have inline images rather than links.

Screenshot 2020-01-25 06.12.46.jpg

Screenshot 2020-01-25 06.14.40.jpg

Screenshot 2020-01-25 06.21.45.jpg