Thanks, I tried it. Could not really find examples of it being used.

 use Spreadsheet::ParseXLSX;
use Spreadsheet::ParseXLSX::Cell;
my $parser = Spreadsheet::ParseXLSX->new( );
my $workbook = $parser->parse($infile); print "workbook=$workbook\n";
        my ( $row_min, $row_max ) = $worksheet->row_range();
        my ( $col_min, $col_max ) = $worksheet->col_range();
    for my $worksheet ( $workbook->worksheets() ) {

my $cell = $worksheet->{Cells}[$row_min][$col_min] ;
print Dumper($cell);
my $toprint=  $cell->is_merged() ? 'got merged' : 'unmerged';
print "$toprint\n";
                                                     }
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prints $VAR1 = undef;

Can't call method "is_merged" on an undefined value at

So unless I am doing something wrong, there is no Merged or is_Merged property

Not all cells are going to be populated, and ones that don't will be undef, as you are seeing, not a cell object. Try it on a specific cell that you know has content. Or better yet, one you know is merged and one you know has content but is not merged.

important to note that merged ranges are stored at the worksheet level, not on a per cell basis. You can get a merged range with my @mergedRange = $worksheet->get_merged_areas(); which will give you the four coordinates defining the merged range in the form of ($start_row, $start_col, $end_row, $end_col).

Important to note that the data will only be stored in top left cell of a merged range, so if the cell is in the merged range, you would be able to access its data at $start_row, $start_col