I have Layer 1, which uses the NAD1983 datum (GCS_North_American_1983). I'm trying to add Layer 2, which uses the 1983-2011 datum (GCS_NAD_1983_2011).
I assume I have to transform the GCS somehow, because I'm given a Geographic Coordinate Systems Warning when I try to add Layer 2.
I've never needed to convert between two NAD datums before. I can't find any resources online about it. Are they fundamentally the same? Or should I accept the very long, complicated default transformation that ArcMap gives me (WGS_1984_(ITRF08)_To_NAD_1983_2011 + WGS_1984_(ITFR00)_To_NAD_1983)?