No DID info in CDR


Just realized that DID and Outbound CallerID columns in CDR are empty. Reinstalling CDR module 12.0.23 gives no change.
There is a note in a changelog ‘12.0.21: Add index to DID col in cdr DB’ which means for me that the similar issue has been discovered and possibly solved… Any idea how can I get back the DID information?
BTW, still see the old records with DID information from November '15 and earlier.