You can pull in the search text itself using
| savedsearch. You can pull in the results of previous runs of the search using
| loadjob. If you are using standard report acceleration be aware that other searches on the same data that are different than the search that you accelerated will automatically be accelerated also, without you having to do anything (because this acceleration is done at the bucket/index layer, not the search/report layer). So I think that the answer is probably: you don't have to do anything!