Forgot to mention, the transparency of the image is set to "none"
Can you post one example file with this behavior. What is you system details (OS, RAM, Graphics card, etc.) and SolidWorks version?
There can be several reasons for it. Search on this forum and you'll find similar post about images/logos disappearing in drawing.
Some of them arePictures disappear in multi-page drawings only
I GOT IT. I've been having this problem for months. I am using 2008 and keep losing my BMP every time I closed the drawing.
Here's the fix.
Open drawing template. slddot
Click edit sheet format
Click on and delete current logo. you will notice there are no handles on the image when clicked.
Click Create from file>Browes and find your logo file. Click OK
Place the image where you want and click Edit sheet
Now click file>Save sheet format.
I originally used insert image to load these in. I guess that is where the bug is.