Paste should honor layers!
Love layers!
But when I go to an older layout (in a current build) and copy all objects to a reformatted page, everything copies over onto a single layer. This is a PITA, with dozens of objects which should return to their assigned layers, acting as your new feature for pasting groups honors layers.
Would love to see Copy / Paste All Layers - perhaps combined through a special modifier key command with Paste in Place, equally valuable.
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Have you tried using “Paste Remembers Layers” option in the Layers panel’s flyout menu and see if you get the desired result?
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Adobe InDesign team