What I have done is use a csv import script with the semi-colon as the list seperator. Then I have created my data in excel, saved in csv format then uploaded the data.
The csv file is 8k.
When I run the script I get the max updates resource error. When I look in my database I see records 3 - approx 49000 contain a single Null in the next field after the auto_increment field.
If I clear the data by a delete query and then try to insert data again manualy, the increment count always starts at 50000.