I have a shp file with 10,000 polygons, covering 7 different soil types. I tried uploading it to ArcGIS Online, but I see that there is a 2000 feature limit. So I aggregated the 10,000 polygons down into 7 multi-polygon polygons. I get a timeout error and it does not load. I tried to allow generalizing the polygons on upload, but still get the timeout error. I then tried saving one multi-polygon as a single shp file and loading it, but again, timeout error. Has anyone hit this problem, and how did you resolve it (if it was resolvable)?