Issue #00005551

ContentStoreReplicator may throw NPE if source documents were removed while replicating

Replications may take long time if we have a lot of documents to copy.

The Replicator builds a list of operations and then does one op after the other. If in the meantime on of the to-be-copied pages have been removed in the source we may get a NPE and the replicator stops.

We now added a special check for this situation and just ignore this op and continue.