Some contacts disappear after I convert my CSV contacts into VCF — why?

This is usually a problem because a CSV file may not be properly organized before converting it. I know that contacts may also vanish if a name or a contact number is left blank while converting. The other problem is mostly when a header does not match a contact field. Also, a problem encountered can arise if there are characters that a program does not recognize during conversion. The best all-in-one solution is that I'm also using Softaken CSV to VCF Converter Software. This is an offline utility that works smoothly on all Windows OS, plus it supports many features like field mapping, preview, bulk conversion, and others. You can try it for free.