Hi, as far as i know the full history of your trades is recorded on mql, therefore it will show all the results not just the recent ones or a specific date you request.
The best thing to do is open a new account at icmarkets. If you login to your icmarkets account, you will see an option to do this under 'Account Management' which is located on top of the page. Once registered you can use your new strategy to sell your signals.
I hope this helps.
This cannot be done. Account's history will be loaded complete when you connect your account with MQL5 signal's database.
So, start with a fresh account, there is no way around that.