TableView ProxyModel problem

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There is only one view. The highest and lowest value in a column is highlighted in the view. I want the user to be able to remove a row from the view (without removing it from the source) The problem isn't in hiding the row, it is in highlighting the correct row AFTER a row is hidden.
I forgot to show the code for hiding the row;

void DlgPrintPreview::on_btnDeleteRow_clicked()
{
    QModelIndex index = ui->printView->currentIndex();
    if (!index.isValid())
        return;
    ui->printView->setRowHidden(index.row(),true);
    highlightCells();
 
}

void DlgPrintPreview::on_btnDeleteRow_clicked()
{
    QModelIndex index = ui->printView->currentIndex();
    if (!index.isValid())
        return;
    ui->printView->setRowHidden(index.row(),true);
    highlightCells();
    
}

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