Allow $geoNear on collections with more than one 2dsphere/2d index

$geoNear command requires that a collection have at most only one 2d index and/or only one 2dsphere

I guess that mongodb implicitly takes location field from index. The problem is that I have two location fields in collection (border and center point). Both fields have 2dsphere index. I want to query only center points with $geoNear, but this limitation does not allow me to do this.