JJ reported that in some segments of the map, only a few stars were appearing. Checked the code quickly and it seemed fine, so then replaced the index1.xml file with a backup copy from May and the start reappeared. Compared May index1.xml to September index1.xml and noted differences.
Concluded that the code processing that XML file into stars for the map requires that if you specify a segment on the map in the section/title and section/sortKey elements (e.g. A6) then you must specify a shape (rect or poly) and provide coordinates (a minimum of four numbers, I'm not quite sure what each number represents, though they are obviously the number of pixels from the top-left corner of the image).
If you write a location element like this:
<location>
<title>The Curtain</title>
<sortKey>CURTAIN</sortKey>
<id>CURT2</id>
<type>site</type>
<section>
<title>A6</title>
<sortKey>A6</sortKey>
<shape/>
<coords/>
</section>
</location>
then a star for that entry doesn't appear, and some other stars in that segment of the map (e.g. A6) don't appear either (the code processing the stars for the map segment dies when it encounters the empty shape element and any subsequent entries aren't processed into stars)

If you include an entry like this:
<location>
<title>The Curtain</title>
<sortKey>CURTAIN</sortKey>
<id>CURT2</id>
<type>site</type>
<section>
<title>A6</title>
<sortKey>A6</sortKey>
<shape>rect</shape>
<coords/>
</section>
</location>
then a star for this entry appears on the left margin immediately below the map, and the stars for all the other entries appear properly. If you have more than one such entry in a section, then all of the stars for such entries are piled underneath each other and only the first star is visible. The rect requires at least 4 comma-delimited integers which are offsets from the top-left of the image (but I'm not sure of exactly what each value represents)

If the location has a sortKey value of OFF MAP, then apparently there are no problem with the display.