Ops Manager And Replica set

we are planning to migrate from MongoDB enterprise to community server for MongoDB with the replica set method (we will add the new node to the replica set and when replication is completed we will remove the old ones).

However, the job( rs.add() ) was stopped due to the following log.
Log : Cannot find self in new replica set configuration; I must be removed; NodeNotFound: ~
And The new node did not appear in rs.status().

we are using mongoDB ops manager and think that this can be occurred from the ops manager

How can I complete my work?

thank you for your help