I am working on combining several Excel files that contain contact information into a single vCard (.vcf) file. Each Excel file has a different set of contacts, and some even include multiple phone numbers and email addresses per contact. I am concerned about potential errors like data loss, formatting issues, or duplicate entries during the merge and conversion process. Has anyone here successfully merged multiple Excel files into one vCard without running into these problems? What is the best method or tool to ensure accurate conversion and avoid errors?