Unable to convert the extended DAC Fields in the Sales Quotes screen CR304500 classic to Modern UI

Hi ​@Siddu 

Since you need to add the four columns in the summary level you can do as below.

Remove the existing template and tabs using the remove attribute in the extension.

Split the summary level using split attribute and add your code. Below is the screenshot reference and code.

Hope this will solve your issue.

<template>
    <template remove="#form"></template>
    <template remove="#QuoteCurrent_tab"></template>
        <qp-splitter  id="spsalesqt1" initial-split="50">
            <split-pane>
                <qp-template id="spform1" name="1-2" class="equal-height" qp-collapsible wg-container="Quote_form1sp">
                    <qp-fieldset id="phF_form_PXLayoutRule#0sp1q" slot="A" view.bind="Quote">
                        <field name="OpportunityID"></field>
                        <field name="QuoteNbr" pinned></field>
                        <field name="IsPrimary" pinned config-enabled.bind="false"></field>
                        <field name="Status"></field>
                        <field name="DocumentDate" pinned="false"></field>
                        <field name="ExpirationDate" pinned></field>
                    </qp-fieldset>
                    <qp-fieldset id="phF_form_PXLayoutRule#8sp2q" slot="B" view.bind="Quote">
                        <field name="BAccountID" pinned></field>
                        <field name="LocationID" pinned></field>
                        <field name="ContactID" pinned></field>
                        <field name="CuryID" control-type="qp-currency" view.bind="currencyinfo"></field>
                        <field name="OwnerID"></field>
                        <field name="Subject" pinned config-type.bind="1" config-rows.bind="3"></field>
                    </qp-fieldset>
                </qp-template>
           </split-pane>

           <split-pane>
            <qp-template id="spform2" name="1-1" class="equal-height" qp-collapsible wg-container="Quote_form2sp">
                <qp-fieldset id="phF_form_PXLayoutRule#25sp1q" slot="A" view.bind="Quote" class="highlights-section">
                    <field name="ManualTotalEntry"></field>
                    <field name="CuryAmount"></field>
                    <field name="CuryLineDiscountTotal"></field>
                    <field name="CuryDiscTot"></field>
                    <field name="AMCuryEstimateTotal"></field>
                    <field name="CuryTaxTotal"></field>
                    <field name="CuryProductsAmount"></field>
                </qp-fieldset>
                <qp-fieldset id="Estimatedmargins25sp1q" slot="B" view.bind="Quote" class="highlights-section" caption="Estimated Margins">
                    <field name="usrtestField1"></field>
                    <field name="usrtestField2"></field>
                    <field name="usrtestField3"></field>
                    <field name="usrtestField4"></field>
                </qp-fieldset>
            </qp-template>
           </split-pane>
        </qp-splitter>>

        <!-- Tabs -->
	<qp-tabbar id="QuoteCurrent_tabext1" wg-container>
		<qp-tab id="tabActivitiesexttb1" caption="Activities" ref="tabActivities_Content"></qp-tab>
		<qp-tab id="tabDetailsexttb2" caption="Details">
			<qp-grid id="ProductsGridextgrd1" view.bind="Products" wg-container="Products_ProductsGrid"></qp-grid>
		</qp-tab>
		<qp-tab id="tabAdditionalInfoexttb3" caption="Additional Info" ref="tabAdditionalInfo_Content"></qp-tab>
		<qp-tab id="tabEstimatesexttb4" caption="Estimates">
			<qp-grid id="gridEstimatesextgrd2" view.bind="OpportunityEstimateRecords"></qp-grid>
		</qp-tab>
		<qp-tab id="tabContactexttb5" caption="Contact" ref="tabContact_Content"></qp-tab>
		<qp-tab id="tabAddressesexttb6" caption="Addresses" ref="tabAddresses_Content"></qp-tab>
		<qp-tab id="tabTaxesexttb7" caption="Taxes">
			<qp-grid id="grid1extgrd3" view.bind="Taxes"></qp-grid>
		</qp-tab>
		<qp-tab id="tabDiscountsexttb8" caption="Discounts">
			<qp-grid id="formDiscountDetailextgrd4" view.bind="DiscountDetails"></qp-grid>
		</qp-tab>
		<qp-tab id="tabApprovalsexttb9" caption="Approvals" ref="tabApprovals_Content"></qp-tab>
		<qp-tab id="tabRelationsexttb10" caption="Relations" ref="tabRelations_Content"></qp-tab>
	</qp-tabbar>
</template>