I am having a problem where complex line fills are disappearing from my Illustrator documents. I am exporting maps from ESRI's ArcGIS, ArcMap to be exact, as .AI and Illustrator EPS files and opening the resultant file in Illustrator 10 for further editing. After saving, many of the line fills stop showing. The individual lines are there. I can select them with my Direct Select Tool, and the correct color and stroke width is shown in the main tool bar and Stroke Window.

I am running Illustrator 10 on a Dell Latitude laptop, 1.6 ghz with 1gb of RAM and Windows 2000. This also occurs on a Dell Dell Precision, 3 ghz with 2gb of Ram and Windows 2000.

Any ideas?