Contacts "On My Mac" vs "iCloud"
I suspect my contacts are a mess. Most on my Mac show as being in in both with a few not having a field for either [despite being on my Mac]. I suspect this comes of having had Macs for decades and having some transfer data to newer machines with varying degrees of success.
Questions:
Is there any reason for having both?
Given I have a Mac, iPad and iPhone will not iCloud do for all?
Can I easily merge them all to iCloud and then [uneasily] sort out any duplication?
Thanks,
Colin