Sample:
![Image](https://forums.factorio.com/images/ext/08a091ff0a1c7deefeeefbe176133f43.jpg)
Before save, the string includes tiles, even when the checkbox is not ticked.
![Image](https://forums.factorio.com/images/ext/fae05840438bd9544b6e0ea3e39e4ed7.jpg)
0eNqdlNFuwyAMRf/Fz0SiWZpm/MpUVUlqTUgJQeBWjSL+fdD0YepoF3hCBny4XBsW6IYLaiMVgVhA9pOyIL4WsPJbtUOYo1kjCJCEIzBQ7RgivGmD1hZkWmX1ZKjocCBwDKQ64w3Ezh0ZoCJJElfiPZhP6jJ2aPyG/1gM9GR9+qSCCo8sfMocBn/KWRrs17XSsT/wMhnON7M/ktlx3VWEXeWawl2Ets+l7WK0OtPTp2vXEfQh09IN6CYTzZ+L5duZ5PDo5Ted+TjNP6TeICEETa9qlrJ7I5snKeEpQniKjjRHkgx544cv0v2fEr++NQZXNHZtkKoq93XzyZvGuR89hqja
After save, the string does not have the tiles, as expected.
![Image](https://forums.factorio.com/images/ext/121957e0688cb33dab0dc19d517d96cc.jpg)
0eNqd0+EKgyAQAOB3ud8GrbnWfJUxRq1jCHWJ2ijCd5/Vn7EJK3/Jqfepp05QNT0qLcmCmEA+OjIgrhMY+aSymfvsqBAESIstMKCynSMclEZjEqtLMqrTNqmwseAYSKpxAHFwNwZIVlqJq7gE4536tkLtJ/yzGKjO+PSO5l14MvEp49z4VWqp8bGOZY794NluPN1sH3fb4X3zgM1ji5K6gHaK1Q4hLY+s6dex8wB9jizpBrqIpNPvy/LPefkC4uPHMHihNuvanGenvLikReHcG3TWIq8=