Re-Download a Batch Upload file
If you need to download a batch upload file again you can click the "Download" link in the Reports, Collection History page. If the link is no longer visible you can use this URL: https://app.ucollect.biz/collection/download_file/XXXXXX (replace XXXXXX with the Batch number). There is no way to remove a payment from the batch after it has been generated (yet) so if you need to remove a collection then you will need to redo the entire batch.
This only applies to upload gateways, not API gateways.