Offline Maps quality between in DP2 and DP1

I did fetch some areas using Mission Planner, then I did copy those maps into my Nexus7 on DP location (storage/emulated/0/DroidPlanner/Maps)
When look offlines with DP1, all the selected areas maps are OK, good zoom, clear resolution.
When look offlines with DP2, to the same maps, just some areas are looking good, the other has very low resolution. Any clue why?
Both DP1 and DP2 points to the same location on my Nexus7.

SOLVED by robooting my Nexus7.
Maybe some cash memory.
Now both DP1 and DP2 see same maps, same quality.