TO REMOVE EXISTING WORLD ENTITIES FROM ROOFTOP (i.e. the 4 Aircon Units and the radio antenna):

In Open IV navigate to mods > update > x64 > dlcpacks > mpheist > dlc.rpf > x64 > levels > gta5 > _cityw > koreatown_01 > koreatown_metadata.rpf

- Drop "hei_kt1_rd_long_0.ymap" AND "hei_kt1_rd_strm_0.ymap" inside koreatown_metadata.rpf

**Be sure to backup files if you're not using "mods" folder**