To clarify - on my mac: I have several extra email addresses, and an old mailing address in my personal card, that do not show up in edit mode. On my iphone: I have several extra unknown phone numbers (that don't show up on my mac), in addition to the stuff from the mac, that do not show up in edit mode. On my ipad - has the same info as the phone, same issue with edit mode.
If I delete my card on all devices, and then start a new one, as soon as I enter either my phone number or my main email address it propagates everything back in immediately, and it's back on all devices as it was before, still with the uneditable incorrect info, and stuff that's on one device but not the others.
I spent some quality time with the apple chat support person last weekend - he suggested a number of things to try, none of which fixed anything. Wanted to escalate it to higher up on the support chain, but I was running out of time and patience. I just completely deleted my personal card for now, will wait until 26.1 or whatever and try it again.