Bug in version 2.4.9 where setting the group by oed_field to a field in the accounts file e.g. AccName or AccCurrency does not result in the correct grouping.

Example analysis settings for PiWind (modified by adding AccName field):
analysis_settings.json

Output with 2.4.9:
gul_S1_summary-info.csv

summary_id,AccName,tiv
1,0,6800000.0

Correct output from 2.4.8:
gul_S1_summary-info.csv

summary_id,AccName,tiv
1,TestAcc1,3400000.0
2,TestAcc2,3400000.0