Trouble Importing Metatrader CSV Data

 

Hi there. I have exported a csv file with past 1 year of history from metatrader 4 for a forex chart. The timeframe is 1 minute. I used 'Symbols'  (Or Ctrl+U) -> 'Bars' to export the csv file. However, when I tried to import the file again to view the 1 year history, it seems that there is no option to import the file back to metatrader. I tried searching online to solution, but none are really relevant to my problem. 

I also tried to avoid downloading any file, and directly search the past history in metatrader by pressing 'Enter', but it seems metatrader only have the past 4 months of data with this method. 

Any help is highly appreciated. Thanks.