Data from 7 months ago will still be accessible, but if you are doing a bulk query, you will need to use the export api: https://github.com/clover/export-api-examples
EDIT: You will probably also want to filter by createdTime. Amount is not an indexed property, so it's likely that you'd get a timeout before getting the data you're looking for. IT would be best to narrow down the amount of data you're pulling from the Clover servers as much as possible when querying for data so far back.
Please refer to our docs on how to do so: