I have been able to create point, line, and polygon data on numerous projects until today. I was able to draw numerous line feature classes in a couple of different geodatabases. I started drawing some line info in a different database and it disappeared but the shape info is reflected in the attributes box. I started drawing a line in another database and it showed for awhile. I switched back and forth between two different line layers in the same database and it was fine. When I finished half of the lines disappeared while the other half were visible. I have tried deleting the feature classes all together, renaming them, changing the symbols, and exiting ArcMap over and over. Nothing has worked. Any suggestions?