The alignment controls apply to either the pages within a cell (clustering disabled) of the entire layout within the sheet (clustering enabled).
If you want to center the pages in the rotated row then you will need to turn clustering off
The clustered layout will align the rotated row to an edge so you can trim that edge with a single cut
New to this workflow, but having problem with creating a dutch imposition with the rotated page not center in the sheet, is there any setting I have missed?
The bleed should be retained on the dutch row.. Not sure why that's not happening but here's a workaround:
Add an imposition node before this imposition.
Impose 1up on an automatic press sheet size (do not select any of the press sheet size options)
Impose using the trimbox and add .25" margin all around
enable marks around the trimbox.
THe output should be a 1up PDF whose dimensions are the trimbox + .25" all around.
The trim marks should start at .0625" from the corners and extend for .0625.
Change the dutch imposition to use the bleed box.
Turn off all marks on the dutch imposition.
That should do the trick until this issue is addressed.
apologies for the inconvenience.