I don't know if the databar conditional rule has a default style or not but it will not show anything within the cell only the value.

<UserControl xmlns:ig="http://schemas.infragistics.com/xaml" x:Class="PickDropMaintenance.DropConfirmationView"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:sdk="http://schemas.microsoft.com/winfx/2006/xaml/presentation/sdk"
mc:Ignorable="d"
d:DesignHeight="300" d:DesignWidth="400">

<Grid x:Name="LayoutRoot" Background="White">
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition Height="Auto" />
<RowDefinition Height="Auto" />
<RowDefinition />
</Grid.RowDefinitions>
<Grid x:Name="headerGrid" Grid.Row="0" >
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition Height="Auto" />
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<Rectangle Grid.Row="0" Fill="{StaticResource Brush01}" Height="40" Canvas.ZIndex="0" />
<HyperlinkButton Margin="5" Command="{Binding ViewHomeCommand}" Content="Home" FontSize="20" Foreground="White" Grid.Row="0" VerticalAlignment="Center" HorizontalAlignment="Left" Canvas.ZIndex="1" />
<sdk:Label Margin="5" Grid.Row="1" Foreground="{StaticResource Brush01}" Content="Sales Order Drop Confirmation" FontSize="60" FontFamily="Georgia" >
<sdk:Label.Triggers>
<EventTrigger RoutedEvent="Grid.Loaded">
<BeginStoryboard>
<Storyboard >
<DoubleAnimation From="500" To="0" Storyboard.TargetName="mainScrollTranslate3"
Storyboard.TargetProperty="X"
Duration="0:0:0.5">
<DoubleAnimation.EasingFunction>
<PowerEase />
</DoubleAnimation.EasingFunction>
</DoubleAnimation>
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</sdk:Label.Triggers>
<sdk:Label.RenderTransform>
<TranslateTransform x:Name="mainScrollTranslate3" />
</sdk:Label.RenderTransform>
<sdk:Label.RenderTransformOrigin>
<Point X="0.5" Y="0.5" />
</sdk:Label.RenderTransformOrigin>
</sdk:Label>
<sdk:Label Margin="5" Grid.Row="2" Foreground="{StaticResource Brush03}" Content="Sales Order Validation" FontSize="24" FontFamily="Georgia" >
<sdk:Label.Triggers>
<EventTrigger RoutedEvent="Grid.Loaded">
<BeginStoryboard>
<Storyboard >
<DoubleAnimation From="500" To="0" Storyboard.TargetName="mainScrollTranslate4"
Storyboard.TargetProperty="X"
Duration="0:0:1">
<DoubleAnimation.EasingFunction>
<PowerEase />
</DoubleAnimation.EasingFunction>
</DoubleAnimation>
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</sdk:Label.Triggers>
<sdk:Label.RenderTransform>
<TranslateTransform x:Name="mainScrollTranslate4" />
</sdk:Label.RenderTransform>
<sdk:Label.RenderTransformOrigin>
<Point X="0.5" Y="0.5" />
</sdk:Label.RenderTransformOrigin>
</sdk:Label>
</Grid>
<ProgressBar IsIndeterminate="True" Grid.Row="1" Height="10" FlowDirection="RightToLeft" />
<Grid Grid.Row="2">

</Grid>
<ig:XamGrid Grid.Row="3" AutoGenerateColumns="False" ItemsSource="{Binding OrderDropCollection}">
<ig:XamGrid.SelectionSettings>
<ig:SelectionSettings CellClickAction="SelectRow" CellSelection="None" RowSelection="Multiple"/>
</ig:XamGrid.SelectionSettings>
<ig:XamGrid.RowSelectorSettings>
<ig:RowSelectorSettings/>
</ig:XamGrid.RowSelectorSettings>
<ig:XamGrid.FilteringSettings>
<ig:FilteringSettings AllowFiltering="FilterRowTop"/>
</ig:XamGrid.FilteringSettings>
<ig:XamGrid.ConditionalFormattingSettings>
<ig:ConditionalFormattingSettings AllowConditionalFormatting="True" />
</ig:XamGrid.ConditionalFormattingSettings>
<ig:XamGrid.Columns>

<ig:TextColumn Key="SalesOrder" HeaderText="Sales Order" />
<ig:TextColumn Key="SalesOrderConfirmed" HeaderText="Confirmed">
<ig:TextColumn.ConditionalFormatCollection>
<ig:IconConditionalFormatRule ShouldRefreshOnDataChange="True">
<ig:IconConditionalFormatRule.Rules>
<ig:ConditionalFormatIcon Value="1">
<ig:ConditionalFormatIcon.Icon>
<DataTemplate>
<Image Width="16" Height="16" Source="/PickDropMaintenance;component/Images/OK64.png" />
</DataTemplate>
</ig:ConditionalFormatIcon.Icon>
</ig:ConditionalFormatIcon>
<ig:ConditionalFormatIcon Value="0">
<ig:ConditionalFormatIcon.Icon>
<DataTemplate>
<Image Width="16" Height="16" Source="/PickDropMaintenance;component/Images/Delete64.png" />
</DataTemplate>
</ig:ConditionalFormatIcon.Icon>
</ig:ConditionalFormatIcon>
</ig:IconConditionalFormatRule.Rules>
</ig:IconConditionalFormatRule>
</ig:TextColumn.ConditionalFormatCollection>
</ig:TextColumn>
<ig:TextColumn Key="Progress" HeaderText="Validation Progress">
<ig:TextColumn.ConditionalFormatCollection>
<ig:DataBarConditionalFormatRule
DataBarDirection="Bidirectional"
DataBrush="Red" MaximumValue="50" MinimumValue="0"
StyleScope="Cell" NegativeDataBrush="Yellow"
UseNegativeDataBar="True" ShouldRefreshOnDataChange="True" CellValueVisibility="Collapsed">
</ig:DataBarConditionalFormatRule>
</ig:TextColumn.ConditionalFormatCollection>
</ig:TextColumn>
</ig:XamGrid.Columns>
</ig:XamGrid>
</Grid>
</UserControl>