I have a multilayer board I'm working with. To ease placement and routing, I created some layer pairs and two Layer Set (TOPSet, BottomSet) and then I clicked on hide/show button to assign meaningful layers to each set. That worked fine with Signal, Overlay, Paste & Solder layers but I have a problem with mechanical layer 1 and 13.
In my design ICs are placed on both sides of the PCB. This doesn't show well on 2D layout Mode (3D obviously works fine as there isn't any trasparency). Some components at the top have their "violet" box assigned to Mechanical Layer 1, some to Mechanical Layer 13. This is also true for bottoms components.
How can I fix this problem so each component has the correct mechanical layer assigned based on its side placement? This question is similar to this one, but I cannot figure out how to solve what colin explained in his last comment: Assigning mechanical layers in Altium
Exactly, how can I delete Layers Pair with components already placed? I receive an error (there are primitives in it). If I change that pair to have other layers associated, then I'm able to delete it but then what colin explained doesn't work for me.