You can also skip the wiping of the data on your phone. Once you have the existing contacts imported in Outlook then you will have to configure AkrutoSync again. The easiest way to avoid this is to remove the Exchange account from the phone as this will remove all contacts, calendar, tasks and notes that synced with AkrutoSync from the phone. Keep in mind that because the contacts from Outlook have already synced over the phone, you may experience duplicates. Here is a link that may help with exporting data. This will ensure the two way synchronization. Then import the contacts into Outlook and AkrutoSync will sync them with your phone but now they will be saved under the Exchange account that was created for AkrutoSync.

You would have to export those contacts out of the phone and remove them from the phone. Data cannot jump from one account to the other. This is because the existing data on the phone is saved under a different account like Google for example. The reason this step is there is primarily to prevent duplicates but also because AkrutoSync cannot sync your existing data from the phone to Outlook. One of the steps in the configuration was to clear the phone of data.

Delete duplicates in outlook 2011