I don't suggest to cover the whole printer with the bag. I only did it once but I felt the machine's temperature was going too much high. if you still want to do it doublecheck that the bag doesen't cover the airflows in the bottom left and right of the printer, the control hardware is placed there under and it might produce failures if it get overheated.
A better temporary solution is to make side and front panels. I was waiting to buy the acrylic ones that Zortrax sells and in the meantime I just cut three rectangular pieces out of a mylar sheet and sticked them with masking tape to the M200 outer chassis. Not very nice to see but very cheap and it produced the needed result, no warping or detachments anymore.