Group by Rows then FillDown does not work

Hi,

I have some missing values in the  column "Projektkosten (Geplant) (MFr)". I would like to fill the missing data from the previous "Exportdatum" that has the same "PMS-ID".

Sample data:

ID, PMS-ID, Exportdatum, Projektkosten (Geplant) (MFr)

I have used Groupby and fill with the following command

= Table.Group(
#"Sorted Rows1",
{"PMS-ID"},
{{"Rows", each Table.FillDown(_, {"Projektkosten (Geplant) (MFr)"}), type table}}
)

The command works without errors, but does not fill the missing data.

Any idea why the Filldown may not be working?