It is likely that your Canceled Payments still appear in your reports because they have not been filtered out of the report's search results. Please take the following steps to work toward resolving this issue:

1. From your GIFTS/GIFTS Alta Workspace, conduct your Payment search as you normally would for your report
2. Choose to 'Add Filter' within Payments and select 'Status' as the filter
3. With the Status filter chosen, choose 'Is Not' and then select 'Canceled' > OK
4. Confirm your new filters include 'Status IS NOT Canceled' > Search

Your search and any reports built off of this search should now omit any canceled payments.