REPL LOAD should update last repl ID only after successful copy of data files.

For REPL LOAD operations that includes both metadata and data changes should follow the below rule.
1. Copy the metadata excluding the last repl ID.
2. Copy the data files
3. If Step 1 and 2 are successful, then update the last repl ID of the object.
This rule will allow the the failed events to be re-applied by REPL LOAD and ensures no data loss due to failures.