Yes - that's the expected behavior per the settings you have specified.
This page order:
Means that the imposition will take pages 1,3,5 and 7 from the document and impose them. It will then increment by 1 and take pages 2,4,6,8 and impose them. After that it will increment again and impose pages 3,5,7,9.
I expect that you will not want to have the same pages imposed multiple times so that will be a problem. There are two ways to correct this:
Hi I`have problem with correct imposition some files.
In my settings imposition make incorect :-(
This is orginal file:
to accomplish desired effect as attached files.