Wow, my Magellans never do that. Instead they simply lead you to your original
destination from wherever you got to when you wandered. They've always worked that way, which of course is what either of us would want.
I hope my new Magellan, when it comes, acts like my old ones and not like yours.
I can't think of any setting that could be causing it to do that, either.
Have you tried updating the internal software? It's pretty easy to do. Maybe they've fixed it.
I'll give you fifty bucks for it, sight unseen.