So, perhaps this checkbox allows the setting to work within the Application.cfc file. However, when I look in the ColdFusion Administrator, the 'Preserve case for Struct keys for Serialization' server setting (discussed above) is checked.

I just ran a test on my production Adobe ColdFusion 2021 server (ie, this blog), and I cannot reproduce the behavior. But, any attempt to change this leads to other ColdFusion errors that are even less visible. I don't know if this is a bug in the CommandBox setup or, a bug in the underlying ColdFusion setup. In memory file system limit cannot be less than Application limit. I did not test with this option enabled because any attempt to update this setting inside a CommandBox container leads to the following error:

Inside the Adobe ColdFusion Administrator, there is a server settings option, 'Preserve case for Struct keys for Serialization'. Epilogue: ColdFusion CFIDE Admin Settings

To get around this, I just had to quote the keys within my implicit struct creation - a technique that has been in ColdFusion since forever. I'm going to consider this a bug and, I'll look in the Adobe ColdFusion bug tracker to see if there is already a ticket. As you can see from the output, the place and hello struct-keys maintain proper key-casing within the index.cfm only - all serialization performed directly within the bounds of the Application.cfc component file converted the keys to all uppercase.

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