Adding domain from DNS zone to ovh hosting

Hello, have problems with adding a domain to ovh hosting.
So, what I did:
1. Created a DNS zone for both domains in ovh
2. Edited external name servers old provider to ovh ones: dnsXXX.ovh.net and nsXXX.ovh.net
3. Pointed A record to hosting ip for both dns zones
4. Waited 30h :)
5. For hosting in MultiSite added both domains

Results: Domains seems to be added, but not available for edition or deletion. After few hours the record is deleted, no error message. Nada.
What could be wrong? Have somebody a similar problem?