// Searched using a each loop
search.load({id: searchId}).run().each(function(result) {});

// Searched looping through this way
var searchResults = search.load({id:searchId}).run();
var results = [];
var start = 0;
var end = 1000;
do{
	results = results.concat(searchResults.getRange({start:start, end:end}));
	start += 1000;
	end += 1000;
}
while((results/1000) % 1 == 0);
for(var i=0; results.length>i; i++){}


// Tried load record/save record
var cl = record.load({
	type:'customrecord_contractline',
	id: result.id
});
cl.setValue({fieldId: 'custrecord_cl_cancelled', value: true});
cl.save();

// Tried record.submit
record.submitFields({
	type:'customrecord_contractline', 
	id:result.id,
	values:{custrecord_cl_cancelled:true}
});