Like any messaging software, Skype uses a contact list. It can therefore be very interesting to try to save them at any time to restore them later, if something goes wrong. Here's how to do that:
Backup Skype contacts
1. Open Skype and click on Contacts and go to Advanced Features and choose Backup contacts to a file.
2. Choose a location for your file and name it. Note that it is saved as .vcf file.
Restore Skype contacts
1. Open Skype and click on Contacts and go to Advanced Features and select Restore contacts from file.
2. Choose your file format that is saved as .vcf file from the location and double click on it or either open it. Thats it, the contact gets restored.