final int lastCol = merged.getLastColumn();
final int firstRow = merged.getFirstRow();
final int lastRow = merged.getLastRow();
if (firstCol >= lCol && lastCol <= rCol
&& firstRow >= tRow && lastRow <= bRow) { //total cover
changes.add(new MergeChange(new AreaRefImpl(firstRow, firstCol, lastRow, lastCol, refSheet), null));
sheet.removeMergedRegion(j);
}
}
return new ChangeInfo(null, null, changes);
}