[EDH-3768] - Metering Data export file contains 0.000 values for missing IN/OUT positions

[EinarArro]

Problem

When user exports the metering data to Excel and some positions have only IN or OUT values, then the counterpart IN/OUT has 0.000 values, although the value missing from the Database (no 0.000 value in the database)

Steps to reproduce

• Create metering data the way, that some positions have only IN and some only OUT values
• Export the metering data to Excel

Expected result

• If the IN or OUT value is missing the database, then there is no 0.000 value in the Excel

Actual Result

• If IN value is present and OUT value is missing, then Excel export still contains 0.000 value for OUT
• If OUT value is present and IN value is missing, then Excel export still contains 0.000 value for IN

Impact (If known)

If you just change some actual value and do not delete those fake 0.000 values, then import fails with error message

Workaround

Manually delete 0.000 values