Quote Originally Posted by Hanr3 View Post
Unless your going from a normal map to a HD map?
Example I'm not sure about ...:

*LakeMaster region card version "x" is released in March ... With Lake "Y" showing 10ft contours...
*Lake "Y" is LakeMaster surveyed in June of same year ...
*ChartSelect map of Lake "Y" is purchased in September of same year ...

I do not know if that ChartSelect purchase would be the older data or the newest surveyed data ...

Rickie