When I open it there is 0,5556 in bleed set up in the Pre-press tab in Document properties>PDF creation.
I had set the bleeds to zero at Page Properties and the exported PDF still had a page size of 9.61 x 12.11. I assumed that would be true for the exported PDF. However, I re-exported the documented and checked the Pre-Press tab and the bleeds were once more at 0.5556. So I set them to 0 in the Pre-Press tab, and voila, the PDF page size in the PDF was 8.5 x 11.
Has this changed at some point? I believe I have set these in Page Properties before, and the setting was enforced during any further operations. It seems that if one sets the bleeds to 0 in Page Properties, they should not be reset to 0.5556 at export. I do understand why this only applies to Print, but the Page Properties should be consistent once set.
No matter. thank you for resolving my issue.