Hi,

When you say that the column is blank, do you mean after committing the row, either by pressing Enter or clicking outside of the row, the column is not showing the value selected from the drop down list?

If so, do check again on the following:-

1. On "When View executed List item changed" rule, the existing rule “then apply the changes made to the row on the editable list” is still there.

2. In the "Transfer Data" action rule, you have mapped the drop down list under Add/Edit Row in the Context Browser to the appropriate SmartObject field.

With the above configured, the column should show the value after adding and committing the new row.