Hi Yaroslav Lukin,
I think the problem related to replicate datasource.
I tried and succeeded.
RSA1=>Modeling=>DataSource
Execute replicating function.
Notice to Metadata Replication Popup.
On it, you choose Deletion BW datasources option, if you choose No delete, it will happen like issue.
I tried to choose Delete BW datasource, and replicate.
It was okay.
Thanks & regards
Dennis.