printing problem with QBPro 2006

I just upgraded to 2006. In previous versions, when printing a two copies of a multi-page invoice form, each page would print two copies before printing the next page. I printed one copy for the customer on preprinted letterhead and one copy on blank paper for the company. I could stack paper in the printer that would alternate from letterhead to blank paper. Each page of the multi-page invoice would print one on letterhead and one on blank paper. After upgrading, now the printer prints each complete invoice form before printing the second. If I have a two page invoice, the first copy will print first page on letterhead, second page on blank. The second copy will be the same at the letterhead paper is the next page queue in the printer. This gives me two first pages on letterhead and two second pages on blank paper. Does anyone know how to set the printer to print each page both copies first before advancing to the next. This is how it would print in previous versions.