Increasing pre-load increases ride height which increases camber. Same goes for the opposite.
Any change in camber will result in a change in toe. Adjusting toe will not change camber unless excessive toe adjustment is required. However a little camber change can make big toe changes.
I would argue that you will most likely not succeed in setting new fox shocks to perfectly match your previous shock height. The spring rates are different and the machine will also sit differently static versus loaded.
I am doing my best to not go scientific but just set your pre load where you want it. Most people add extra pre load for extra height. Then adjust your toe. Then you know it's right when you are done. Most machines don't even have a correct alignment from the factory.