As it is, if you group several objects together, they all move to the "active layer." for example if I have several objects that are on multiple layers that I need to group for alignment, etc... and I want them to all stay on the layers they are set to.... they will all move to the "active layer" when they are grouped. Then I have to go back afterward and individually select them all and move them back to the layers they belong on....
Another, handy alternative is to use that tools that solve the problem of restore original location after group / ungroup. It supports also smart copy and paste to original layers on same or another page.
Ungroup objects to original layers and restore theirs position in CorelDRAW
Copy / paste objects between pages to theirs original layers in CorelDRAW
This particular functionality may run for free even in restricted mode.