Ok, i may have found a temporary solution. This may (virtually, not really) tie all multiple iCloud accounts together to merge all data on macs and cloud.
In my case i have two Apple IDs, one old (to purchase apps and music) and one new (mobile me), both registered valid to iCloud. I made them both have same contact, calendar and vice versa data manually. Then wiped my iPhone clean, first synced with my old Apple ID. All contact data filled in. then erased account from iCloud settings on the iPhone, chosen to leave all data on the phone intact, not to erase them. Then set up my mobile me account and chosen to merge all data on the iPhone with .me accont. It doesn't caused any problems like multiple contacts or anything.
Then to test this when all my contact apps on all devices were open (iphone, icloud and apple address book on the mac) i added edited some info on iCloud.com contacts. They all immediately synced to all devices 🙂. Now it seems working ok. This is my temporary unofficial solution. I hope it works for all of you.
PS: Because i DO NOT trust the process, in the beginning i backed up my mac address book to a file to use in any case of emergency.
