Import Error

While I took a backup of my contacts in .ctbin format, there were 739 contacts. Then I deleted all my contacts and tried to import from the .ctbin file. Several time the app crashed and I was unable to import my contacts. Then I restart my phone and tried several times. Once the import was successfull but there were 673 contacts only. Rest of the contacts are gone. Solve my problem please.

!~ Toha ~! about Contacts Tool, v10.1.0