Tried adjusting my shallowater shading and fishing range on my hds 7 gen 3 and it keepd telling me only legacy data avaliable in an error message anyone know why this is? also running a navionics premium hot maps card. Iv herd a couple different things one was that you have to update the mapping card each year to use those features now since the newest lowrance update. also herd those features were working fine on the old software the wons who updated are the ones affected by this. any input would be a great help thanks in advanced!!!!