I know there are several different versions of the same hitch for the Ascent. I went to buy hitch (L101SXC002) for my 2019 Ascent, but it said it was superceeded by L101SXC003. When I look at the L101SXC003 it says its for the 2020 model. Is this backwards compatible? Can I install L101SXC003 on my 2019?