Forms :: How To Allow User To Select From Current Approved Values

I have a combo box that needs to only show approved values for any current data input but also be able to show legacy values (that were approved at one time but are no longer approved).How can I only allow the user to select from current approved values but still be able to pull a legacy record and show the legacy value.

Table structure

tblRepairReason
ID (Nnumber)
Name (Text)
ApprovedValue (Yes/No)

The recordsource of the combo box:

Code:

SELECT tblRepairReason.ID, tblRepairReason.Name, tblRepairReason.ApprovedValue
FROM tblRepairReason
WHERE (((tblRepairReason.ApprovedValue)=True));