Standardisation of Unit of Measure (UoM)

In table <b>T006</b>(Units of Measurement), the fields MSEH6 and MSEHT has the UoM entered as per International standards (like kWh) and internaly in SAP as all capitals (like KWH in field MSEHI). The description of MSEH6 shows that the internal values are converted to the value entered in MSEH6 for screen output. However when I generate output in report programs or create an output file, the UoM are displayed as in SAP and not as what is stored in MSEH6.

Doesn't the conversion happens by itself during output or is there an explicit command to convert them?

Regards,