Try using the CAS to customize the first counter you place and switching to the eye dropper tool to place the others.  I stopped using the grab and drag method because it's a bit awkward for repetitive jobs like placing counters. When I read your thread, I wondered if the reason I stopped having this problem was because I stopped using grab and drag and started using the eye dropper tool.  So, I just did a quick test using the culprit counter and the two methods: reversion when I place all the counters and then customize by grabbing the presets and dragging them over the counters one by one; no reversion when I customize the first counter and place the rest with the eye dropper tool.  Placing objects on the counters doesn't change them, nor does installing dishwashers or moving them in and out of corner positions.  I also tested them by placing them in and out of family inventory (though I didn't actually move my test gal).  They appear to revert while in inventory but have their custom look when placed back in the game.