Transferring the data file from Entourage (Version 10.1.4) to Outlook

I need help to transfer the data file from Entourage (Version 10.1.4) to Outlook. I could locate that the data files are stored in the Main Identities folder in Office X Identities Folder. However, when I try to import the file using the FileàImport option in Outlook, I am receiving an error message stating "No Entourage data files in this folder”. But when I click the “Get info” option selecting the data file in iMac, the file format is displayed as "Outlook data file".
How can I resolve the issue?
