It seems the plugin works well with WPML for regular posts, but not for custom post types.
when I translate a regular post with a map, I se this message
WPML will copy _wp_geo_map_settings from Portuguese (Brazil) when you save this post.
which means the custom field values will be copied over, so the map marker will stay in place.
however when I translate a custom post type, it doesn't.
do you know what's missing?