Move recprds from accounts to Prospects.

Move recprds from accounts to Prospects.

Hi,
 
I have imported data directly into accounts, however I should have import them into prospect instead.
Problem is I have already updated datas, worked on those prospects etc...
 
I would like to know if there is an easy way to move records from Accounts to Prospect instead of exporting and then import on prospect + delete current account records.
 
Thanks!
Florian