Affinity Designer - Insided Curves Storke

[Grimmjow80]

I have a question about curves / shapes inside another (parent - child).
When selecting shape or closed path containing curves, stroke modification change only parent item. To change children strokes, they have to be selected separately. 

When items are grouped, there is no problem - changing group stroke make effect on all items in group.
Is there a way to change child property when changing parent, or to select both, parent and child, to apply format for all items.

[Gear maker]

1 hour ago, Grimmjow80 said:

Is there a way to change child property when changing parent, or to select both, parent and child, to apply format for all items.

I know of no way to change both the child and parent at the same time, except to unlink them so they are no longer child and parent.  Drag the child out from the parent then select both make the change, then drag the child back under the parent.  Sorry.