The files that need changing from all separated to one package (besides the .toc's) are:

TimerLib.lua (Ash_Core\\ -> DoTimer_Package\\Ash_Core\\)
Templates.xml (Ash_Core\ -> DoTimer_Package\Ash_Core\)
Notifications.lua (Ash_Core\\ -> DoTimer_Package\\Ash_Core\\)

All other files can be left alone.