Auto Row Height for row in xamDataGrid

the issue is not similar enough. this is a specific question.

I already have the grid formatted but have two issues.

Here is the xaml for what I currently have:

<igWpf:XamDataGrid Margin="8"

Theme="Office2010Blue"

DataSource="{Binding Path=Invoices, Mode=OneWay, UpdateSourceTrigger=PropertyChanged}"

GroupByAreaLocation="AboveDataArea"

IsGroupByAreaExpanded="True"

BorderThickness="1"

BorderBrush="LightBlue"

ScrollViewer.HorizontalScrollBarVisibility="Visible"

ScrollViewer.VerticalScrollBarVisibility="Visible">

<igWpf:XamDataGrid.Resources>

<ResourceDictionary.MergedDictionaries>

</ResourceDictionary.MergedDictionaries>

</ResourceDictionary>

</igWpf:XamDataGrid.Resources>

<igWpf:XamDataGrid.ViewSettings>

<igWpf:GridViewSettings UseNestedPanels="True" Orientation="Vertical" />

</igWpf:XamDataGrid.ViewSettings>

<igWpf:XamDataGrid.FieldLayoutSettings>

<igWpf:FieldLayoutSettings AllowAddNew="False"

AutoArrangeCells="Never"

AllowDelete="False"

AutoFitMode="Always"

AutoGenerateFields="False"

DataRecordSizingMode="Fixed"

FilterUIType="LabelIcons"

GroupByExpansionIndicatorVisibility="Visible"

HighlightAlternateRecords="True"

MaxSelectedRecords="1"/>

</igWpf:XamDataGrid.FieldLayoutSettings>

<igWpf:XamDataGrid.FieldSettings>

<igWpf:FieldSettings AllowEdit="False"

AllowRecordFiltering="True"

AutoSizeOptions="All"

AutoSizeScope="AllRecords"

CellClickAction="SelectRecord"

ExpandableFieldRecordHeaderDisplayMode="NeverDisplayHeader"

LabelClickAction="SortByMultipleFields"

LabelTextAlignment="Center"

Width="Auto"

SummaryUIType="MultiSelect"

SummaryDisplayArea="TopFixed"

AllowSummaries="True"/>

</igWpf:XamDataGrid.FieldSettings>

<igWpf:XamDataGrid.FieldLayouts>

<igWpf:FieldLayout Key="InvoicesKey">

<igWpf:FieldLayout.Settings>

<igWpf:FieldLayoutSettings AutoArrangeCells="Never" />

</igWpf:FieldLayout.Settings>

<igWpf:FieldLayout.Fields>

<igWpf:UnboundField Row="2" Column="0" RowSpan="3" Label="Client Name" />

<igWpf:Field Row="2" Column="1" RowSpan="3" Name="InvoiceDefinitionName" Label="Invoice Definition Name"/>

<igWpf:Field Row="2" Column="2" RowSpan="3" Name="InvoiceNumber" Label="Invoice Number"/>

<igWpf:UnboundField Row="0" Column="3" ColumnSpan="4" RowSpan="2" Label="Agency Transactions" AllowGroupBy="False" />

<igWpf:Field Row="2" Column="3" Name="AgencyTransactionsGrossCollectionsAmount" Label="Collections"/>

<igWpf:Field Row="2" Column="4" Name="AgencyTransactionsGrossNsfsAmount" Label="NSFs"/>

<igWpf:Field Row="2" Column="5" Name="AgencyTransactionsGrossReversalsAmount" Label="Reversals" />

<igWpf:Field Row="2" Column="6" Name="AgencyTransactionsNetCommissionAmount" Label="Commissions"/>

<igWpf:UnboundField Row="0" Column="7" ColumnSpan="4" RowSpan="2" Label="Client Transactions" AllowGroupBy="False"/>

<igWpf:Field Row="2" Column="7" Name="ClientTransactionsGrossCollectionsAmount" Label="Collections"/>

<igWpf:Field Row="2" Column="8" Name="ClientTransactionsGrossNsfsAmount" Label="NSFs"/>

<igWpf:Field Row="2" Column="9" Name="ClientTransactionsGrossReversalsAmount" Label="Reversals"/>

<igWpf:Field Row="2" Column="10" Name="ClientTransactionsNetCommissionAmount" Label="Commissions"/>

<igWpf:Field Row="2" Column="11" RowSpan="3" Name="AgencyAndClientTransactionsNetSalesTaxAmount" Label="Sales Tax"/>

<igWpf:UnboundField Row="2" Column="12" RowSpan="3" Label="Gross Collections" AllowGroupBy="False"/>

<igWpf:Field Row="2" Column="13" RowSpan="3" Name="NetEnterpriseDueAmount" Label="Due GC"/>

<igWpf:Field Row="2" Column="14" RowSpan="3" Name="NetClientDueAmount" Label="Due Client"/>

<igWpf:UnboundField Row="2" Column="15" RowSpan="3" Label="Adjusted Due Client (offset)" AllowGroupBy="False" />

<igWpf:UnboundField Row="0" Column="16" ColumnSpan="2" RowSpan="2" Label="Disbursement" AllowGroupBy="False"/>

<igWpf:Field Row="2" Column="17" Name="DisbursementReferenceId" Label="Disbursement Reference Method"/>

<igWpf:UnboundField Row="0" Column="18" ColumnSpan="8" Label="General Ledger Entries" AllowGroupBy="False"/>

<igWpf:UnboundField Row="1" Column="18" ColumnSpan="2" Label="Trust" AllowGroupBy="False"/>

<igWpf:UnboundField Row="2" Column="18" Label="Account Number"/>

<igWpf:UnboundField Row="2" Column="19" Label="Cost Center" />

<igWpf:UnboundField Row="1" Column="20" ColumnSpan="2" Label="Client Payable" AllowGroupBy="False"/>

<igWpf:UnboundField Row="2" Column="20" Label="Account Number"/>

<igWpf:UnboundField Row="2" Column="21" Label="Cost Center"/>

<igWpf:UnboundField Row="1" Column="22" ColumnSpan="2" Label="Alternate Receivable" AllowGroupBy="False"/>

<igWpf:UnboundField Row="2" Column="22" Label="Account Number"/>

<igWpf:UnboundField Row="2" Column="23" Label="Cost Center"/>

<igWpf:UnboundField Row="1" Column="24" ColumnSpan="2" Label="Prepaid" AllowGroupBy="False"/>

<igWpf:UnboundField Row="2" Column="24" Label="Account Number"/>

<igWpf:UnboundField Row="2" Column="25" Label="Cost Center"/>

</igWpf:FieldLayout.Fields>

</igWpf:FieldLayout>

</igWpf:XamDataGrid.FieldLayouts>

</igWpf:XamDataGrid>

the xaml creates this:

if you look at the pasted image of what the xaml creates, you will notice that the row in the datagrid has a height for three lines of text, which is understandable based on the xaml. But only the last line will ever have text in the Row. How can I get the Row in the data grid to only show the last line of data for the Row so that when multiple items exisit in the DataSource all the Rows will look good and not have these huge row heights that are not needed for how I am populating the data.