We originally decided to set the lastCommittedOpTime to blockOpTime when applying the recipient config, but later realized that it would be possible for that value to be different (and more important earlier) than the currentCommittedSnapshot (which is a fact propagated through WiredTiger). There is no precedent for these values moving backwards, but there is precedent for clearing these values since that simulates the environment during startup recovery, and in certain reconfig scenarios. Instead, we will clear both values when applying the recipient config.