This Payroll will need to be either voided or restored in order to process again with the correct date.
It is important that you have a current division backup of your division prior to doing either option below.

Option 1:  Void the payroll checks and/or void the EFT's and process the payroll over.

Option 2:  Restore the last division backup prior to processing this payroll and process payroll over.
If restoring the complete database from a division backup is not an option, it is possible to only restore the payroll files, ##py*, and the bank files, ##br*, from the backup.