Apple contacts: first contacts disappear, then entire groups
Hello.
I am using Apple contacts to manage my approx. 5500 contacts in different groups that are constantly updated. They are synchronised over the cloud on my Mac, my iPhone and iPad. I know that this is not ideal and I've got all sorts of problems, because I don't think that this app was ever created for so many contacts.
But still. It kinda worked until a few days ago contacts started disappearing in a group that I had just set up. As if the cloud set the group back to a version of a few minutes before. (Note: the contacts disappeared from the group, but they still existed in the database.) I had to add the contacts to the group several times until they seemed to be stable. Yesterday all seemed fine, but then today, this group and another one disappeared completely. Again: contacts still in the database, groups vanished. ARGH!
Can anybody help? Was there a general iCloud problem?
Thank you.
m.
MacBook Pro 13″, macOS 12.6