Append before VOID Adds every import row as a new row before the VOID section. Base rows stay as they are. Default strategy.
Positional (1:1 by index) Pairs rows by position: row 1 with row 1, row 2 with row 2, and so on. Extra import rows are inserted before VOID.
Smart first-word flowing Uses index pairing until the first chapter number, then matches rows by chapter token. You can fix pairs manually in the mapping table.