[FIX] BTree persistence - missing updates
[FIX] BTree persistence - missing updates

 * Caused track coordinator index not to be updated;

indico/indico,DirkHoffmann/indico,indico/indico,DirkHoffmann/indico,indico/indico,ThiefMaster/indico,mic4ael/indico,mvidalgarcia/indico,mvidalgarcia/indico,mic4ael/indico,OmeGak/indico,ThiefMaster/indico,mic4ael/indico,DirkHoffmann/indico,pferreir/indico,mvidalgarcia/indico,ThiefMaster/indico,OmeGak/indico,OmeGak/indico,ThiefMaster/indico,indico/indico,mic4ael/indico,pferreir/indico,DirkHoffmann/indico,mvidalgarcia/indico,pferreir/indico,pferreir/indico,OmeGak/indico