Garmin Basecamp 4.7.0 on Windows breaks MapInstall sending .img format maps
It's nothing mkmap can fix - just a note if you're wondering:
On Windows MapInstall you cannot send ANY map in the classic .img format anymore. Also genuine Garmin maps are arriving as overview map only. Actually it would be cool if garmin could use overview maps on devices too, so far they were basecamp/mapsource only.