print double after adding Bursting

we are in 11.5.10.2

In the "Print Selected Invoice" Concurrent program, adding the Bursting program in the "AfterReport" in Print Selected Invoice concurrent program so the program can email and print to customer directly automatically.  Everything works fine except it always print double.  The Bursting program picked up the printer name and number of copies from the Print Invoice concurrent program.  When user submits the Print Invoice CP with printer name = 'PRINTER1' and copies = 2, as usual, the CP prints 2 copies to PRINTER1.  Now, the Bursting program is triggered automatically ( part of "After Report" ), Bursting program picked up the