Only one index item built from keyword list in qhp file

[joekemp]

I am currently using 4.7.1 on Windows XP. I am trying to build my own documentation to be displaying in Assistant.

Here's my qhp file (test.qhp):

<QtHelpProject version="1.0">
    <namespace>com.test.1_0</namespace>
    <virtualFolder>docs</virtualFolder>
    <customFilter name="Test Documentation">
        <filterAttribute>test</filterAttribute>
    </customFilter>
    <filterSection>
        <filterAttribute>test</filterAttribute>
        <toc>
            <section title="Test Manual" ref="test.html" />
        </toc>
        <keywords>
            <keyword name="one" ref="test.html#one"/>
            <keyword name="two" ref="test.html#two"/>
            <keyword name="three" ref="test.html#three"/>
            <keyword name="four" ref="test.html#four"/>
        </keywords>
        <files>
            <file>test.html</file>
        </files>
    </filterSection>
</QtHelpProject>

<QtHelpProject version="1.0">
    <namespace>com.test.1_0</namespace>
    <virtualFolder>docs</virtualFolder>
    <customFilter name="Test Documentation">
        <filterAttribute>test</filterAttribute>
    </customFilter>
    <filterSection>
        <filterAttribute>test</filterAttribute>
        <toc>
            <section title="Test Manual" ref="test.html" />
        </toc>
        <keywords>
            <keyword name="one" ref="test.html#one"/>
            <keyword name="two" ref="test.html#two"/>
            <keyword name="three" ref="test.html#three"/>
            <keyword name="four" ref="test.html#four"/>
        </keywords>
        <files>
            <file>test.html</file>
        </files>
    </filterSection>
</QtHelpProject>

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test.html is a simple file with the four anchors in it.

I compile with the following command:
qhelpgenerator test.qhp -o test.qch

... and get the following tty:
Building up file structure...
Insert custom filters...
Insert help data for filter section (1 of 1)
Insert files...
Insert contents...
Insert indices...
Documentation successfully generated.

However, when I add the documentation to Assistant and select the Index navigation tab I only have the first index, namely, "one". What's happened to the other indices?