It is best to run the SQL command to update the keys.
1. If you are on a single server, then you will want your SQL Administrator to use this query:
UPDATE LenderAddresses
SET Lenderstring = UPPER(Lenderstring)
go
2. If you are on a Shared server, and you want it done for all the sites, then you use this query:
UPDATE LenderAddressesALL
SET Lenderstring = UPPER(Lenderstring)
go
3. If you are hosted by OCLC, contact OCLC Support.