If you are using a download subset to synchronize a subset of the data on the consolidated database, then by default the download delete subset is set to Same, which makes it exactly the same as the download subset. You can choose to change it to None or Custom.
If the download subset is Custom and you are using a shadow table to track deletes, any column values used by your download subset logic must be copied to the shadow table when a row is deleted. Primary key column values are automatically copied to the shadow table. If you require access to any other column values, specifically those on the Download Delete Subset tab by checking any required columns in the Delete shadow table columns list.
Except for specifying the extra columns to be added to the shadow table, defining a custom download subset is identical to setting up a custom download delete subset.
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