Acumatica - sitemap item does not show in modern U

I just added a Sales Commissions report to sitemap and it shows in classic UI but not in modern UI. When I search for it in modern UI, result returns nothing. How my sitemap node looks like in project.xml:

<SiteMapNode>
    <data-set>
        <relations format-version="3" relations-version="20160101" main-table="SiteMap">
            <link from="MUIScreen (NodeID)" to="SiteMap (NodeID)" />
            <link from="MUIWorkspace (WorkspaceID)" to="MUIScreen (WorkspaceID)" type="FromMaster" linkname="workspaceToScreen" split-location="yes" updateable="True" />
            <link from="MUISubcategory (SubcategoryID)" to="MUIScreen (SubcategoryID)" type="FromMaster" updateable="True" />
            <link from="MUITile (ScreenID)" to="SiteMap (ScreenID)" />
            <link from="MUIWorkspace (WorkspaceID)" to="MUITile (WorkspaceID)" type="FromMaster" linkname="workspaceToTile" split-location="yes" updateable="True" />
            <link from="MUIArea (AreaID)" to="MUIWorkspace (AreaID)" type="FromMaster" updateable="True" />
            <link from="MUIPinnedScreen (NodeID, WorkspaceID)" to="MUIScreen (NodeID, WorkspaceID)" type="WeakIfEmpty" isEmpty="Username" />
            <link from="MUIFavoriteWorkspace (WorkspaceID)" to="MUIWorkspace (WorkspaceID)" type="WeakIfEmpty" isEmpty="Username" />
        </relations>
        <layout>
            <table name="SiteMap">
                <table name="MUIScreen" uplink="(NodeID) = (NodeID)">
                    <table name="MUIPinnedScreen" uplink="(NodeID, WorkspaceID) = (NodeID, WorkspaceID)" />
                </table>
                <table name="MUITile" uplink="(ScreenID) = (ScreenID)" />
            </table>
            <table name="MUIWorkspace">
                <table name="MUIFavoriteWorkspace" uplink="(WorkspaceID) = (WorkspaceID)" />
            </table>
            <table name="MUISubcategory" />
            <table name="MUIArea" />
        </layout>
        <data>
            <SiteMap>
                <row Position="1.5" Title="Sales Commissions" Url="~/Frames/ReportLauncher.aspx?ID=SO646000.rpx" Expanded="0" IsFolder="0" ScreenID="SO646000" NodeID="972cf181-504a-4df7-88d1-c4cb1a0c93d4" ParentID="85e0f6b3-8ae8-43aa-ad7b-ea4d4d5f381e" />
            </SiteMap>
        </data>
    </data-set>
</SiteMapNode>

And a screenshot of my site map directory:

https://drive.google.com/open?id=1wp2xWqdx-0lbGE7xfDuD6bhtLrK1-I7i

Any ideas what might be happening? I tried recreating site map entry several times and still nothing.

You have to add it to the work space after adding to the sitemap. Just because you add it to the sitemap does not automatically add it to the new UI.

The help articles should help to walk you through editing the new UI. Here is an article that might help:

To Add a Link to a Workspace

More help...

Customizing the Modern User Interface

Workspaces in the Modern UI

Edit: If you already added the sitemap to your customization and later add the entry to a workspace, you need to update the sitemap entry in your customization project by reloading from the database (option under sitemap).