I was importing schedules into my site and saw some odd behavior. I used the event-sample.csv to make my file and have 500 events in it. If I just grabbed my csv and imported it, I could get 41 events to import. Since I was just putting in date/time/venue/home/away, I discovered if I click on the column headers and picked –deactivate, then more data can come in and I can import 324 rows. I have not been able to get it above that number so I am importing in chunks which turned out not to be so bad. I was not able to tweak my memory settings in my php file so just used this work around.