Thanks @BlakeTerhune for the reply. I have tried using both the addressesToLocation (batch) and addressToLocation (single search) and it does not return the input fields (besides the address). The outFields parameter is only available on the addressToLocation method. I uploaded a csv with objectid, address, and comments for ~50 records but nothing in the response returns those fields (example output attributes object below).
{
"Status": "M",
"Score": 100,
"Match_addr": "1420 McCarthy Blvd, New Bern, North Carolina, 28562",
"LongLabel": "1420 McCarthy Blvd, New Bern, NC, 28562, USA",
"ShortLabel": "1420 McCarthy Blvd",
"Addr_type": "PointAddress",
"Type": "",
"PlaceName": "",
"Place_addr": "1420 McCarthy Blvd, New Bern, North Carolina, 28562",
"Phone": "",
"URL": "",
"Rank": 20,
"AddBldg": "",
"AddNum": "1420",
"AddNumFrom": "",
"AddNumTo": "",
"AddRange": "",
"Side": "",
"StPreDir": "",
"StPreType": "",
"StName": "McCarthy",
"StType": "Blvd",
"StDir": "",
"BldgType": "",
"BldgName": "",
"LevelType": "",
"LevelName": "",
"UnitType": "",
"UnitName": "",
"SubAddr": "",
"StAddr": "1420 McCarthy Blvd",
"Block": "",
"Sector": "",
"Nbrhd": "",
"District": "",
"City": "New Bern",
"MetroArea": "",
"Subregion": "Craven County",
"Region": "North Carolina",
"RegionAbbr": "NC",
"Territory": "",
"Zone": "",
"Postal": "28562",
"PostalExt": "2002",
"Country": "USA",
"LangCode": "ENG",
"Distance": 0,
"X": -77.09495801393672,
"Y": 35.09757995227644,
"DisplayX": -77.0941215,
"DisplayY": 35.09773200000001,
"Xmin": -77.0951215,
"Xmax": -77.0931215,
"Ymin": 35.09673200000001,
"Ymax": 35.098732000000005,
"ExInfo": ""
}