The method is as follows: export all transactions into a text file using Script then import all data from this file into MaxProfit.

1. Script installation.

Start MaxProfit and open the "Journal of documents" (Menu --> Documents --> Journal of documents)

Then open 'Data import' panel 

In the "Data format" field, select the value "MT4 History"

In the "Broker" field, select your broker

When you fill in "Broker" field the "Path to file" filed will be filled automatically. Usually the path looks like

"C:\Users\Alex\AppData\Roaming\MetaQuotes\Terminal\CE014884047B3\MQL4\Files\ExportMaxProfit.txt"

Click "Copy script" button 

After that the script "HistoryMaxProfit.ex4" will be copied

from "C:\Program Files (x86)\MaxProfit 4.0\MT4\"

to "Path to MT4 Data Folder\MQL4\Scripts"

2. Data export.

If you are trading in MT4 platform for more than 3 months, then in the 'Account History' window, right-click on any row and select 'All history'. If this is not done, then only the last 3 months’ data will be retrieved.

Restart MT4 or, in the 'Navigator' window, right-click and select 'Refresh'.

If everything is done correctly, then you should see the HistoryMaxProfit script in the 'Navigator' window in the 'Scripts' folder. Run it with a double click or drag it into any window with a chart. Then set the correct dates and click 'Ok'. 

The data will be expoted to the 'МТ4 folder\MQL4\Files\ExportMaxProfit.txt'. On the 'Experts' tab, you can see how many records have been exported.

3. Creating a new Account

In MT4, account number is indicated in the upper left corner of the program window (in this case, the account number is: 751243410). Remember it.

Back to MaxProfit and open Trading account directory by selecting Menu -- > Directories --> Accounts

Click the  button and fill in the form as follows:

Input 'Number' and 'Currency' correctly. Click 'Save and close' button.

4. Data import.

Open Journal of documents if it's closed (Menu-->Documents-->Journal of documents)

Then open 'Data import' panel 

Specify the newly created trading account and click on 'Start import'.

Wait until the importing is complete. Then you can start to import data online.