Semi-Sorted

The problem with new tracks no longer appearing is avoided by using the KML paste and search work around, then re embed.  This  has also overcome the failure of box links on the World Index- though it may be pure coincidence.
Oddly when a new Google Map is summoned it appears in a new tab. Thus all the instructions about using browser back button are out of date. Now return to Library is via browsing tab.

BUT NOTE this work-around means that every change or update to the World Index MUST BE RE-LINKED.........heck