Update Condition.recordedDate as follows Description :  Date condition was first recorded Comments :  When onset date is unknown, recordedDate can be used to establish if the condition was present on or before a given date.  If the recordedDate is known and provided by a sending system, it is preferred that the receiving system preserve that recordedDate value. If the recordedDate is not provided by the sending system, the receipt timestamp is sometimes used as the recordedDate.