Here is your diagram source:
[Click to see on PlantUML online server]
I will appreciate any help to allow reorder, an example is bellow, please try to have frame "E" below frame "A" (vertical).
And, as you mentioned, if we "use `together` and hidden arrows between the components"; We can obtain a workaround:
- with together for all component after the frame "E"
- and some hidden arrows:
AP21 -[hidden]> AP22
AP21 -[hidden]-> AP23
AP23 -[hidden]-> EP21
EP21 -[hidden]> EP22
EP21 -[hidden]-> EP23
[Click to the image to see code on PlantUML online server]
If that can help,