ok, i've figured out how to import and export historical data but now sometimes i get 5m data back to 2000 and other times i only get it back 3 months. i'm using these two sites to get the data

http://www.forextester.com/data/datasources.html

http://www.fxdd.com/en/mt1m-data.html

with the eur/jpy i was able to get 3 million record but with most others it's only 2000. i try to delete the files and reimport them but they never go away. for one currency pair i could only get 2000 records for the 1 minute, but records back very far for the 5m. i have the feeling that the records were already there for the one minute and i imported them from the above sites for the 5 minute. if i could just delete the data then reimport them i think i would be home free.