raster display error

I started tracing a section yesterday and today I find that I can't see it on the display anymore but somehow I can till selected and I can tell it's there. In the Raster Manager the file appears as NOT FOUND and it's highlighted in red. I've tried to look for solutions on the community but what I found on the link above didn't work.

Help!

If raster image is red in Raster Manager then it means that Raster Manager is unable to locate the raster image file on disk. Right click on the raster image name and select File Name and then click on the magnifying glass. This will bring up Windows Explorer window. You can then search for your raster image on disk. When you find it on disk then you can select your raster image and it will be attached in Raster Manager. You can also look at the attached link.

communities.bentley.com/.../9120.rasters-are-red-in-the-raster-manager-list-how-can-i-reload-them

If raster image is red in Raster Manager then it means that Raster Manager is unable to locate the raster image file on disk. Right click on the raster image name and select File Name and then click on the magnifying glass. This will bring up Windows Explorer window. You can then search for your raster image on disk. When you find it on disk then you can select your raster image and it will be attached in Raster Manager. You can also look at the attached link.

communities.bentley.com/.../9120.rasters-are-red-in-the-raster-manager-list-how-can-i-reload-them

Yes, the image appeared as NOT FOUND. But I looked for it from File name and now is back on screen. Thank you!