Sounds like an adventure. A screen shot of the "fragmented sections" would help me tell you what happened. If you were using the topo maps then yes you likely didn't have all the tiles you needed. That is rather difficult to do because the tile cacher only downloads tiles under your tracks. There is another way that grabs all the tiles but it is not recommended because it hammers the map servers and that is impolite.
Originally Posted by reddingnative
It was a great learning experience in good weather.
So, when I opened the DSM app., I did have some fragmented sections. Is that because I didn't have all the data downloaded?