The York sector appears to have been renamed as the Covington Sector
Checking again from what I can tell it appears the York Sector was combined into the Covington Sector. Looking at a sector chart from 2014 and there is no mention of a York Sector, so it's been at least 11 years since it was changed. I can't find any sector charts prior to that.
The York sector is still shown in the
RRDB with the VHF frequencies incorrectly listed as 120.47
0 and 123.92
0. From info dated 2021, 120.475 is the Lytle Low Sector while 123.925 is the Covington Low Sector. These 2 sectors are part of "Area 5" where they are often combined with the other 2 "Area 5" Low Sectors, Rosewood 128.075 and Muncie 124.525.
There is a LiveATC feed where you can hear the controller on 123.925 and the few times I've checked recently the one controller was working all 4 "Area 5" low sectors/frequencies. Typical configurations in the past during the day shift have been to combine Covington-Lytle and Rosewood-Muncie.