To merge contacts stored in the Personal Address book of Baya V2, you need to export it on your machine and import it in Baya V4.
Export from Baya V2
- Log in to your SyConnect account using Baya V2.
- Navigate to the Contacts application.
- On the left pane, select Personal Contacts.
- On the top pane, click the Export contacts link.
- Choose the VCF format file to be exported.
- Download the file to your machine.
- Application downloads all your personal contacts in a .VCF format file.
Import to Baya V4
Refer to the steps mentioned in the document linked here.