Hello, If you make a design with four layers and assign one of the internals layers to "plane" and then switch back to 2 layers, gerber file will be generated keeping the internal layers. The workaround is to go back to 4 layers and then reassign the internals layers to "signal". Then switch back again to 2 layers design and the gerber file will be OK. I'm using easyeda v5.8.19. Project [https://easyeda\.com/editor\#id=5beb49316b7e4df7824a2e0a76c26a5e\|2c02ef9146da4346b689837c227cda4e](https://easyeda.com/editor#id=5beb49316b7e4df7824a2e0a76c26a5e|2c02ef9146da4346b689837c227cda4e) demonstrate this. Regards.