Is there any other reason to Historical Lock buildings?
when you click on a build there is a checkbox near to the bottom saying "Historical" which appears to prevent the building from changing when it upgrades.
so far the only time i needed this is when there was a Bux reward for having 2 Water Towers in a city which came from Service Zones and to stop the first one changing when upgrading i needed to use that Historical Lock.
But is there any other beneficial purpose for this Historical lock?
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