... The only true way to maintain your data is to occasionally export all your junk and save it.
This is the best advice this year on Expedition Portal. I've been messing with GPS tracks since 1992. Almost none of the data I left in any program is currently useful. But those ancient csv (coma separated value) files are all accessible and incredibly fun to load up and stimulate memories of past trips - as well as lead us back to routes that have now disappeared from maps.
Howard