How to fix this Outdated templates issue?

[sushantkarn]

<xf:title>{$campaign.title}</xf:title>

<xf:wrap template="thdonate_campaign_wrapper">
    <xf:set var="$pageSelected" value="overview" />
</xf:wrap>

<div class="block js-CampaignInfoBlock">
    <div class="block-container">
        <div class="block-body">
            <div class="block-row">
                <div class="campaign-description">
                    <xf:if is="$campaign.description">
                        {{ bb_code($campaign.description, 'html', $campaign) }}
                        <xf:else />
                        {{ phrase('thdonate_no_campaign_description') }}
                    </xf:if>
                </div>

                <div class="reactionsBar js-reactionsList {{ $campaign.reactions ? 'is-active' : '' }}">
                    <xf:reactions content="{$campaign}" link="donate/reactions" />
                </div>

                <xf:if is="is_addon_active('ThemeHouse/Reactions')
                           && $xf.options.th_reactHandlers_reactions.thdonate_campaign">

                    <xf:macro template="th_display_reactions"
                              name="reactions_bar"
                              arg-type="thdonate_campaign"
                              arg-id="campaign_id"
                              arg-content="{$campaign}" />

                    <xf:else />

                    <xf:if contentcheck="true">
                        <div class="actionBar">
                            <xf:contentcheck>
                                <xf:if contentcheck="true">
                                    <div class="actionBar-set actionBar-set--external">
                                        <xf:contentcheck>
                                            <xf:react content="{$campaign}" link="donate/react" list="< .js-CampaignInfoBlock | .js-reactionsList" />
                                        </xf:contentcheck>
                                    </div>
                                </xf:if>
                            </xf:contentcheck>
                        </div>
                    </xf:if>
                </xf:if>
            </div>
        </div>
    </div>
</div>

 

[SNap!]

Merge or edit changes, mostly on merge Skin will be destroyed