But are these lost
routes listed in the route
manager?....just to check off the easy answer, make sure your routes (new or old) have the eyeball showing...if you don't see the eyeball, click the blank space where it would be and your route
(Note to self -whine to developers about this - an icon of some sort would be better than the blank space when routes or marks are hidden...maybe a closed eye? or an eyeball crossed out??)
If this isn't an answer, it occurs to me that maybe the navobj.xml file has somehow become READ ONLY. You can check this hunch by investigating the file's "properties"...