Can't get items to be added to update

string requestBody = await new StreamReader(req.Body).ReadToEndAsync();
LookupInputs data = JsonConvert.DeserializeObject<LookupInputs>(requestBody);
if (data == null)
    return new BadRequestObjectResult("There was no data provided, or the data was not formatted properly");

Dictionary<string, List<Dictionary<string, JToken>>> result = new()
{
    { "inject", new() },
    { "update", new() }
};

if (data.TargetJson.Count == 0)
{
    result["inject"] = (from item in data.SourceJson select item).ToList();
}
else
{
    result["inject"] = (from source in data.SourceJson
        from target in data.TargetJson
        where source[data.CommonIdentifier] != target[data.CommonIdentifier] && !source.DictEquals(target)
        select source).ToList();

    result["update"] = (from source in data.SourceJson
        from target in data.TargetJson
        where source[data.CommonIdentifier] == target[data.CommonIdentifier] // && !source.DictEquals(target)
        select target).ToList();
}

return new OkObjectResult(results);