A hacky way:
Use a vmanip, copy the data of the area, replace it by air only, write to map, update_lighing(), then place the original data and write to map without calling update_lighing().
It would be better if you would have used vmanip for the first placement.
Yeah but rewriting my mesh spanwer thingy to use vman would be a huge undertaking when simply disabling update_lighting for add node would do the trick (either as a function parameter or a separate function entirely)
