Sure, but one reason Lee marched North in the first place was to capture enough Northern contraband to feed & supply his army.
It's the reason Stuart was out galivanting instead of there serving as Lee's eyes & ears.
And of course Stuart paid nothing for what he took.
But more to the point: whenever Confederate forces invaded Union regions, they took what they needed and destroyed contraband they couldn't move.
They also kidnapped freed-blacks for return & sale in Confederate slave markets.
And on occasion they also massacred white Unionists, i.e., Lawrence, Kansas in August 1863.
So there was nothing Union troops did in Confederate regions which Confederate troops in Union regions had not previously done.
That is absolutely not true and a lie. Confederate soldiers has to pay for supplies the bought in towns the marched through. They did not raid and pillage at all. They couldn't, under orders they would have been punished. An contrary to popular myth confederate money wasn't worthless in the North. It could be exchanged for green backs (as low as .25 on the dollar at the end ) or bartered for things like tobacco. If you did deep and read actual letters from soldiers you can get true picture that most historians seem to not care about or overlook.
I read one letter form a guy in Ewell's corp that talk about Pennsylvania and the shop keepers he dealt with. Confederate soldiers had to stack arms in camp and were not allowed to go armed into any town, North or South. Did you know that? Only officers carried side arms in town. Anyway this guy buys honey in store in Harrisburg and almost gets into a fist fight because the shop keeper called him a Tory. He also called home a reb and other names and that didn't bother him but being called a Tory was way over the top.